90 is 4/5, so 1/5 is 22.5
90+22.5=112.5
the value is 112.5 :)
Hope this helps! Let me know if you need anything else.
if you mean 12÷12 the answer is 1
if you mean 1/2÷1/2 the answer id 0.25 or 1/4
if you mean 1(2) ÷ 1(2) the answer is also 1
if you mean 1+2÷1+2 the answer is 1