A factory plans to use 240 tons of coal in December, but actually saves 25% compared to the plan. How many tons of coal is actually used?
某工厂12月份计划用煤240吨，实际比计划节约了25%，实际用煤多少吨？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">240 * (3/4)</gadget>
<output>180</output>

<result>180</result>