(2/5) of the number A is equal to (3/4) of the number B, the number A is 150, what is the number B.
甲数的(2/5)等于乙数的(3/4)，甲数是150，乙数是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/5) / (3/4)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">150 * (8/15)</gadget>
<output>80</output>

<result>80</result>