Worker Master Wang and his apprentice make machine parts. Master Wang makes 75 pieces per hour, and apprentice makes 48 pieces per hour. Master Wang works for 3 hours and apprentice works for 5 hours. How many machine parts do they make in total?
工人王师傅和徒弟做机器零件，王师傅每小时做75个，徒弟每小时做48个，王师傅工作3小时，徒弟工作5小时，他们共做多少个机器零件？
<gadget id="calculator">75 * 3</gadget>
<output>225</output>

<gadget id="calculator">48 * 5</gadget>
<output>240</output>

<gadget id="calculator">225 + 240</gadget>
<output>465</output>

<result>465</result>