Answer
80 threads per inch
Work Step by Step
Substitute the pitch for p and solve for n.
$p=\frac{1}{n}$
$0.0125=\frac{1}{n}\longrightarrow$ multiply both sides by n
$0.0125n=\frac{1}{n}\times n$
$0.0125n=1\longrightarrow$ divide both sides by 0.0125
$0.0125n\div0.0125=1\div0.0125$
$n=80$
