On August 8, 2009, Taiwan was hit by a catastrophic flood, and the compatriots on the mainland showed great love and actively helped the same twins in Taiwan to rebuild their homes. The fourth grade students of our school also carried out the "Love Across the Strait". The students wanted to fold 760 paper cranes to send to the children in the disaster-stricken areas in Taiwan. They have already folded 420. The rest will be folded by 17 students. How many pieces do each student fold on average?
2009年8月8日我国台湾遭遇特大水灾，大陆同胞爱心涌动，积极援助台湾受灾同胎重建家园．我们学校四年级同学也开展了"跨越海峡的爱心"，同学们想折760只纸鹤送给台湾灾区的小朋友，他们已折好了420只．剩下的由17位同学折完，平均每位同学要折多少只？
<gadget id="calculator">760 - 420</gadget>
<output>340</output>

<gadget id="calculator">340 / 17</gadget>
<output>20</output>

<result>20</result>