If a coat is sold for 1,000 yuan, it can make a profit of 25%. If it is sold for 1,200 yuan, how much profit can it make?
一件上衣若卖1000元，可获利25%，若卖1200元，可获利多少元．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_000 / (5/4)</gadget>
<output>800</output>

<gadget id="calculator">1_200 - 800</gadget>
<output>400</output>

<result>400</result>