Wudeli Flour Mill has 83 tons of flour to be transferred to the disaster area. It has been transported 6 times by a truck with a load of 9 tons. How many tons can be transported to finish?
五得利面粉厂有83吨面粉要调往灾区，用一辆载重9吨的货车来运，已经运了6趟．再运多少吨才能全部运完？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">83 - 54</gadget>
<output>29</output>

<result>29</result>