The water bill of Xinxing Primary School in July is 1200 yuan, which is 75% less than that in June. How much less water should be paid in July than in June.
新星小学七月份的水费是1200元，比六月份少用了75%．七月分应该比六月份少付水费多少元．
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1_200 / (1/4)</gadget>
<output>4_800</output>

<gadget id="calculator">4_800 - 1_200</gadget>
<output>3_600</output>

<result>3_600</result>