Ding Ding needs to write 800 types, and has already written 240. The rest needs to be completed within 8 days. How many should be written on average every day?
丁丁要写800个打字，已写了240个，余下的要在8天内修完，平均每天应写多少个？
<gadget id="calculator">800 - 240</gadget>
<output>560</output>

<gadget id="calculator">560 / 8</gadget>
<output>70</output>

<result>70</result>