There are 75 tons of cement in the warehouse, and (2/3) of the total is shipped out on the first day, which is equivalent to (3/10) of the first day (3/10) on the second day. How many tons of cement are shipped out on the second day?
仓库里有水泥75吨，第一天运出总数的(2/3)，第二天运出的相当于第一天的(3/10)，第二天运出水泥多少吨？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">75 * (2/3) * (3/10)</gadget>
<output>15</output>

<result>15</result>