A and B jointly produce a batch of parts, A produces 32 per hour, and B produces 28 per hour. After 3.5 hours, all the parts of this batch are produced. How many parts are there in total?
甲乙两人共同生产一批零件，甲每小时生产32个，乙每小时生产28个，3.5小时后，这批零件全部生产完，这批零件一共有多少个？
<gadget id="calculator">32 + 28</gadget>
<output>60</output>

<gadget id="calculator">60 * 3.5</gadget>
<output>210</output>

<result>210</result>