The master and the apprentice process a batch of parts, and the master processes 25% more than the apprentice per hour, 20 more. How much does the master process per hour?
师徒两人加工一批零件，师傅每小时比徒弟多加工25%，多加工20个．师傅每小时加工多少个？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / (1/4)</gadget>
<output>80</output>

<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<result>100</result>