6.1 Angles and Their Measure/37

$240^{\circ }\cdot {\frac {\pi }{180^{\circ }}}={\frac {{\cancel {5}}\cdot {\cancel {2}}\cdot {\cancel {2}}\cdot {\cancel {3}}\cdot 2\cdot 2}{1}}\cdot {\frac {\pi }{{\cancel {2}}\cdot {2}\cdot {\cancel {5}}\cdot {\cancel {3}}\cdot 3}}={\frac {4\pi }{3}}$