certain factory has 200 tons of coal in stock, originally burned 2.5 tons per day, after 20 days of burning, the remaining coal is only burned 1.2 tons per day. How many more days can it burn?
某工厂存煤200吨，原来每天烧2.5吨，烧了20天后，剩下的每天只烧1.2吨．还可以烧多少天？
<gadget id="calculator">2.5 * 20</gadget>
<output>50</output>

<gadget id="calculator">200 - 50</gadget>
<output>150</output>

<gadget id="calculator">150 / 1.2</gadget>
<output>125</output>

<result>125</result>