store shipped a batch of electric vehicles, sold 50, and shipped in another 120, which is 20% more than before. How many electric vehicles were shipped in?
某商店运来一批电动车，卖出50辆，又运进120辆，现在比原来多20%，原来运进多少辆电动车？
<gadget id="calculator">120 - 50</gadget>
<output>70</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">70 / (1/5)</gadget>
<output>350</output>

<result>350</result>