Qianjin Primary School has carried out water saving activities. In March, 320 tons were used, which happened to be (5/8) of the water consumption in February. How many tons were used in February? (solution by equation)
前进小学开展了节水活动，三月份用320吨，正好是二月份用水量的(5/8)，二月份用水多少吨？(用方程解)
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">320 / (5/8)</gadget>
<output>512</output>

<result>512</result>