A primary school used 182.8 tons of water in May, 17.2 tons more than in April. How many tons of water did this primary school use in April and May?
某小学五月份用水182.8吨，比四月份多用17.2吨，这个小学四、五月份共用多少吨水？
<gadget id="calculator">182.8 - 17.2</gadget>
<output>165.6</output>

<gadget id="calculator">165.6 + 182.8</gadget>
<output>348.4</output>

<result>348.4</result>