Question: how to copy a plot into zoomed plot

 Dear Sir,

I trying to merge two which are one is an actual plotted graph and another one zoomed from the same graph. I want to copy zoomed graph into an actual graph, can anyone help in this regard?

My actual graph is like as follows

and after zooming this graph I got as follows

Now I want to change (Insert the zoomed graph inside the actual graph where the text is inserted) by using these two graphs as below

Please help me to plot like this...

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