There are 60 tons of cement in the warehouse, and (2/3) of the total is shipped out on the first day, and the equivalent (3/10) of the first day is shipped out on the second day. How many tons of cement are left in the warehouse that have not been shipped?
仓库里有水泥60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)，仓库里还剩多少吨水泥没有运走？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 * (2/3)</gadget>
<output>40</output>

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

<gadget id="calculator">60 * (2/3) * (3/10)</gadget>
<output>12</output>

<gadget id="calculator">60 - 40 - 12</gadget>
<output>8</output>

<result>8</result>