The school cafeteria bought 25 tons of coal and used up (2/5) of the planned amount (3/4). How many tons are planned to be used?
校食堂买来25吨煤，用去了(2/5)，用去的是计划用量的(3/4)，计划用去多少吨？
<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">25 * (8/15)</gadget>
<output>40/3 = around 13.333333</output>

<result>40/3 = around 13.333333</result>