A pile of coal weighs 200 tons, and 150 tons are used up. How much of the total amount is used?
一堆煤重200吨，用去150吨，用去的占全部的多少
<gadget id="calculator">150 / 200</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>