Pingyuan Machinery Factory plans to produce 56 machine parts every day, and it will be completed in 28 days. Actually produce 42 more per day, how many days are actually completed?
平原机械厂计划每天生产56个机器零件，28天完成．实际每天多生产42个，实际多少天完成？
<gadget id="calculator">56 + 42</gadget>
<output>98</output>

<gadget id="calculator">28 / 98</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">56 * (2/7)</gadget>
<output>16</output>

<result>16</result>