Master Zhang processed 315 parts, processed (2/7) on the first day, and processed the rest (1/5) on the second day. How many are processed the next day?
张师傅加工315各零件，第一天加工了(2/7)，第二天加工剩下的(1/5)．第二天加工多少个？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">315 * (2/7)</gadget>
<output>90</output>

<gadget id="calculator">315 - 90</gadget>
<output>225</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">225 * (1/5)</gadget>
<output>45</output>

<result>45</result>