Xiaofang's family used 8 tons of water last month, and the water fee was 12.8 yuan. It is estimated that 10 tons of water will be used this month. How much is the water fee for this month?
小芳家上个月用了8吨水，水费是12.8元．预计这个月要用10吨水，这个月的水费是多少？
<gadget id="calculator">12.8 / 8</gadget>
<output>1.6</output>

<gadget id="calculator">1.6 * 10</gadget>
<output>16</output>

<result>16</result>