garment factory needs to make 350 pieces of clothing, 130 pieces have been completed, and the rest needs to be completed in 4 days. How many pieces of clothing are made on average per day?
一家服装厂要做350件衣服，已经完成了130件，剩下的要在4天里完成，平均每天做多少件衣服？
<gadget id="calculator">350 - 130</gadget>
<output>220</output>

<gadget id="calculator">220 / 4</gadget>
<output>55</output>

<result>55</result>