10/2/<pi> will also work. This is a result of implied multiplication being changed: http://www.ti.com/calc/docs/faq/83faq039.htm >Try >10/(2<pi>) > >10/2<pi> is the same as multiplying 5 by Pi > >>on my ti-83, something is wrong when i try to divide by 2<pi>. >example: >>10/2<pi>=15.70796327.what my calc is doing is multiplying >10x1.570796327.