Chaoyang Primary School spent 960 yuan on water bills last month, and this month’s water bills are 15% less than last month. How much is this month’s water bills?
朝阳小学上月水费支出960元，本月水费支出比上月节约了15%，本月水费支出多少元？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">960 * (17/20)</gadget>
<output>816</output>

<result>816</result>