Three identical trucks can transport 15 tons of goods at a time, and there are 105 tons of goods in the freight yard. How many times can they be transported by one car?
三辆同样的卡车一次可运15吨货，货场共有105吨货，用一辆汽车来运，多少次运完？
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">105 / 5</gadget>
<output>21</output>

<result>21</result>