The ratio of coal consumption in the canteen of Donghu Primary School in May and June is 7:8, and the coal consumption in May is (3/4) tons. How many tons of coal is used in June?
东湖小学食堂五、六月用煤量的比是7：8，五月份用煤(3/4)吨．六月用煤多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">8 + 7</gadget>
<output>15</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">(3/4) * (8/15)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>