(3/4)*A=(2/5)*B (A, B is not 0), then A is how much of B
(3/4)*A=(2/5)*B(A，B不为0)，那么A是B的多少
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<result>8/15 = around 0.533333</result>