Two people, A and B, work together to process a batch of parts, and finish it in 3 hours. A makes 720 parts, and B makes 696 parts. On average, how many parts does A process more than B per hour? (do it in two ways)
甲、乙两人共同加工一批零件，3小时做完，甲做了720个，乙做了696个，平均每小时甲比乙多加工多少个？(用两种方法做)
<gadget id="calculator">720 / 3</gadget>
<output>240</output>

<gadget id="calculator">696 / 3</gadget>
<output>232</output>

<gadget id="calculator">240 - 232</gadget>
<output>8</output>

<result>8</result>