The store sells 35 microwave ovens, how much is the total income? Please ask at least two more math problems and answer them.
商店卖出35个微波炉，一共收入多少元？请你至少再提出两个数学问题，并解答．
<gadget id="calculator">680 * 35</gadget>
<output>23_800</output>

<gadget id="calculator">520 * 20</gadget>
<output>10_400</output>

<gadget id="calculator">23_800 + 10_400</gadget>
<output>34_200</output>

<result>34_200</result>