plotting – X axis rescaling without altering the y axis

I have asked this question previously and I didn’t get a satisfactory answer. Then I posted a comment and didn’t receive any replies. So I thought to elaborate my issue.
I have:

Plot[{Sin

Then I get
cc

Plot[{Sin
1/902*[Pi]/4 #} & /@ FindDivisions[{0., 3000}, 6] //
N, Automatic}]

Then I get:
bhj

When you compare two figures, I rescaled the x axis in second figure without altering y axis with new ticks. But actually when you look you can see that second plot can be written in terms of Pi multiples. But I don’t know how. Any way?