The grain store originally had 50 tons of rice, but 3 trucks were transported away, and each truck contained 6 tons. How many tons of rice does the grain store have?
粮店原有大米50吨，运走了3车，每车装6吨，粮店现有大米多少吨．
<gadget id="calculator">3 * 6</gadget>
<output>18</output>

<gadget id="calculator">50 - 18</gadget>
<output>32</output>

<result>32</result>