A glass of milk is 250 ml, which contains about (3/5) g of calcium. Xiao Ming drinks two cups a day, how much calcium can he take in in September?
一杯牛奶250毫升，大约里面含(3/5)g的钙质．小明每天喝两杯，整个九月份可以摄取多少钙质？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * 2 * 30</gadget>
<output>36</output>

<result>36</result>