The farm harvests a piece of wheat, and harvests 120 mu every day, which is just finished in 5 days. If the harvest is to be finished one day earlier, how many mu will be harvested every day? (Solve with ratio)
农场收割一块小麦，每天收割120亩，5天刚好完成，如果要提前1天收割完，每天收割多少亩？(用比例解)
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">600 / 4</gadget>
<output>150</output>

<result>150</result>