pile of coal weighs 245 tons. After removing part of the pile, (3/5) of the pile of coal remains. How many tons of coal are left?
一堆煤重245吨，运走一部分后，还剩这堆煤的(3/5)，剩下多少吨煤？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">245 * (3/5)</gadget>
<output>147</output>

<result>147</result>