Question: Trouble getting Mantissa and Exponent

Not getting Mantissa or Exponentb See Bottom

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# eqno = 10
> it := solve({
> 83.0 =  (57.9467777777778) * C_prev  + (-1.001) * C_ksteps  + (-67.1782222222222) * C_fat  + (-91.8695555555555) * C_carb  + (-24.4021555555556) * C_prot  + (-11.5003777777778) * C_fiber  + (-3.21432222222223) * C_sugar  + (-14.1697111111111) * C_saturated  + (-1.61272222222222) * C_fasted  + (1.01),
> 153.0 =  (-11.1222222222222) * C_prev  + (-1.001) * C_ksteps  + (99.9887777777778) * C_fat  + (22.2444444444444) * C_carb  + (48.3705444444444) * C_prot  + (17.2283222222222) * C_fiber  + (-5.21632222222223) * C_sugar  + (9.15358888888888) * C_saturated  + (0.389277777777778) * C_fasted  + (1.01),
> 84.0 =  (-17.1282222222222) * C_prev  + (-1.001) * C_ksteps  + (49.9387777777778) * C_fat  + (17.2394444444444) * C_carb  + (7.72994444444445) * C_prot  + (5.01612222222222) * C_fiber  + (29.8186777777778) * C_sugar  + (10.6550888888889) * C_saturated  + (1.39027777777778) * C_fasted  + (1.01),
> 78.0 =  (-8.11922222222223) * C_prev  + (0.) * C_ksteps  + (-23.1342222222222) * C_fat  + (16.2384444444445) * C_carb  + (-26.1038555555556) * C_prot  + (-12.7015777777778) * C_fiber  + (31.8206777777778) * C_sugar  + (6.05048888888888) * C_saturated  + (-1.61272222222222) * C_fasted  + (1.01),
> 87.0 =  (-8.11922222222223) * C_prev  + (3.003) * C_ksteps  + (-19.1302222222222) * C_fat  + (28.2504444444444) * C_carb  + (-16.4942555555556) * C_prot  + (-5.09397777777778) * C_fiber  + (6.79567777777777) * C_sugar  + (14.7591888888889) * C_saturated  + (-0.111222222222222) * C_fasted  + (1.01),
> 87.0 =  (37.9267777777778) * C_prev  + (-4.004) * C_ksteps  + (-48.1592222222222) * C_fat  + (-83.8615555555555) * C_carb  + (-6.08385555555555) * C_prot  + (0.611722222222222) * C_fiber  + (-58.0691222222222) * C_sugar  + (-20.0756111111111) * C_saturated  + (-1.61272222222222) * C_fasted  + (1.01),
> 133.0 =  (-17.1282222222222) * C_prev  + (3.003) * C_ksteps  + (-56.1672222222222) * C_fat  + (15.2374444444444) * C_carb  + (13.4356444444444) * C_prot  + (3.01412222222222) * C_fiber  + (13.8026777777778) * C_sugar  + (-12.2678111111111) * C_saturated  + (-0.111222222222222) * C_fasted  + (1.01),
> 78.0 =  (-11.1222222222222) * C_prev  + (1.001) * C_ksteps  + (52.9417777777778) * C_fat  + (-2.78055555555555) * C_carb  + (5.82804444444444) * C_prot  + (-0.589477777777777) * C_fiber  + (-39.5506222222222) * C_sugar  + (-0.0556111111111198) * C_saturated  + (4.39327777777778) * C_fasted  + (1.01),
> 84.0 =  (-23.1342222222222) * C_prev  + (0.) * C_ksteps  + (10.8997777777778) * C_fat  + (79.3014444444444) * C_carb  + (-2.28005555555555) * C_prot  + (4.01512222222222) * C_fiber  + (23.8126777777778) * C_sugar  + (5.95038888888888) * C_saturated  + (-1.11222222222222) * C_fasted  + (1.01) },
> [C_prev, C_ksteps, C_fat, C_carb,
>  C_prot, C_fiber, C_sugar, C_saturated,
>  C_fasted]);
                                   16                              18
it := [[C_prev = -0.7676394482 x 10  , C_ksteps = 0.1095758760 x 10  ,

                             16                             16
    C_fat = 0.7856937061 x 10  , C_carb = -0.5792833066 x 10  ,

                               17                             17
    C_prot = -0.1954662069 x 10  , C_fiber = 0.3025217874 x 10  ,

                               15                                  17
    C_sugar = 0.7496058869 x 10  , C_saturated = -0.1779505040 x 10  ,

                                 18
    C_fasted = -0.1062355291 x 10  ]]

> C_prev_V := it[1][1];
                                                          16
                   C_prev_V := C_prev = -0.7676394482 x 10

> C_prev_M := SFloatMantissa(C_prev_V);
                                                          16
                   C_prev_M := C_prev = -0.7676394482 x 10

> C_prev_E := SFloatExponent(C_prev_V);
                                                          16
                   C_prev_E := C_prev = -0.7676394482 x 10

> quit;
memory used=2.3MB, alloc=8.3MB, time=0.03