112 parts were produced in the first 3 days of processing a batch of parts, and 35 parts were produced every day in the next 4 days. How many parts are produced on average every day before and after?
加工一批零件前3天生产了112个，后4天每天生产35个，前后平均每天生产零件多少个？
<gadget id="calculator">35 * 4</gadget>
<output>140</output>

<gadget id="calculator">140 + 112</gadget>
<output>252</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">252 / 7</gadget>
<output>36</output>

<result>36</result>