(1/3) of the number A is equal to (1/2) of the number B. If the number B is 30, what is the number A?
甲数的(1/3)与乙数的(1/2)相等，如果乙数是30，那么甲数是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) / (1/3)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">30 * (3/2)</gadget>
<output>45</output>

<result>45</result>