Last year, a certain farm harvested 45.8 tons of wheat, harvested 3.5 times more rice than wheat, and harvested 30.5 tons less corn than the total of wheat and rice. How many tons of corn are harvested?
某农场去年收小麦45.8吨，收获的水稻是小麦的3.5倍，收货的玉米比小麦、水稻的总数少30.5吨．收获的玉米是多少吨？
<gadget id="calculator">45.8 * 3.5</gadget>
<output>160.3</output>

<gadget id="calculator">45.8 - 30.5</gadget>
<output>15.3</output>

<gadget id="calculator">160.3 + 15.3</gadget>
<output>175.6</output>

<result>175.6</result>