A batch of goods was 120 tons, and (1/4) of it was transported in (3/4) hours. How many tons per hour on average?
一批货物120吨，(3/4)小时运走了它的(1/4)．平均每小时运多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) / (3/4)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">120 * (1/3)</gadget>
<output>40</output>

<result>40</result>