A processes 58 parts per hour, B processes 42 parts per hour, A and B work together for 6 hours, and there are still 83 parts left to be processed. How many parts are there in this batch?
甲每小时加工58个零件，乙每小时加工42个零件，甲、乙共同加工6小时，还剩83个零件没加工完，这批零件共有多少个？
<gadget id="calculator">58 * 6</gadget>
<output>348</output>

<gadget id="calculator">42 * 6</gadget>
<output>252</output>

<gadget id="calculator">348 + 252 + 83</gadget>
<output>683</output>

<result>683</result>