A water conservancy project actually used 12 million yuan, which was 20% less than the plan. How much was the savings compared to the plan?
一项水利工程，实际用了1200万元，比计划节约了20%，比计划节约多少万元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_200 / (4/5)</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 - 1_200</gadget>
<output>300</output>

<result>300</result>