Yongming Primary School used 280 kWh of electricity in July, 35 kWh more than in June. How much kWh of water does the primary school use for two months?
永明小学7月份用电280度，比6月份多用35度，请问该小学两个月共用水多少度？
<gadget id="calculator">280 - 35</gadget>
<output>245</output>

<gadget id="calculator">245 + 280</gadget>
<output>525</output>

<result>525</result>