The school used 2.15 tons of water per day on average in September. If the water is 2.6 yuan per ton, how much water should be paid in September?
学校九月份平均每天用水2.15吨，如果每吨水2.6元，九月份应交水费多少元？
<gadget id="calculator">2.6 * 2.15 * 30</gadget>
<output>167.7</output>

<result>167.7</result>