Mom took 2350 yuan to the supermarket and bought a mobile phone for 1710 yuan. The rest of the money needs to buy 80 yuan a schoolbag, how many can I buy?
妈妈拿2350元钱到超市，花1710元买了一部手机．剩下的钱要买80元一个的书包，能买几个？
<gadget id="calculator">2_350 - 1_710</gadget>
<output>640</output>

<gadget id="calculator">640 / 80</gadget>
<output>8</output>

<result>8</result>