Hi my dear friends, I am haunted by a problem of how to convert a very very very long equation to Latex or Word properly?

Thank you for taking a look at the following 'long and boring' equation and sharing your brilliant idea.

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))*cos(gamma(t))*sin(alpha(t))+1/6*R^2*h^3*rho*diff(theta(t),t)*Pi*cos(beta(t))^2*diff(psi(t),t)*sin(phi(t))*cos(phi(t))*cos(alpha(t))*cos(theta(t))*cos(gamma(t))^2*sin(alpha(t)) = 0"