If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
x/15 = 70.5 // - 70.5
x/15-70.5 = 0
1/15*x-70.5 = 0 // + 70.5
1/15*x = 70.5 // : 1/15
x = 70.5/1/15
x = 1057.49994713
x = 1057.49994713
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