(2/3) of the number A is equal to (2/5) of the number B (both numbers A and B are not 0), then how much is the number A equal to the number B
甲数的(2/3)与乙数的(2/5)相等(甲、乙两数均不为0)，则甲数是乙数的多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/5) / (2/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>