15 trucks transported a batch of goods, and 36 tons were transported in 4 days. According to this efficiency, it can be shipped in another 3 days. How many tons of this batch of goods are there? (Solve with ratio)
15辆货车运一批货物，4天运了36t，照这样的效率，再运3天就能运完，这批货物共有多少吨？(用比例解)
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">36 + 27</gadget>
<output>63</output>

<result>63</result>