If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y in (-oo:+oo)
y/5.5 = 80 // - 80
y/5.5-80 = 0
0.18181818*y-80 = 0 // + 80
0.18181818*y = 80 // : 0.18181818
y = 80/0.18181818
y = 440.0000044
y = 440.0000044
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