The number of parts processed by the apprentice is 45, which is 5 more than the number of parts processed by the master (1/2). How much does the master process.
徒弟加工零件45个，比师傅加工零件个数的(1/2)多5个．师傅加工多少个．
<gadget id="calculator">45 - 5</gadget>
<output>40</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 / (1/2)</gadget>
<output>80</output>

<result>80</result>