There are three piles of goods. The weight of pile A is 12 tons. The weight of pile B is equal to (7/10) that of pile A. The weight of pile C is (3/5) tons heavier than pile B. How many tons does the weight of pile C weigh?
有三堆货物，甲堆货物重12吨，乙堆货物的重量相当于甲堆的(7/10)，丙堆货物比乙堆重(3/5)吨，丙堆货物重多少吨？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">12 * (7/10)</gadget>
<output>42/5 = around 8.4</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(42/5) + (3/5)</gadget>
<output>9</output>

<result>9</result>