An excavator works for 3 hours in the morning and digs a total of 315 cubic meters of soil, and works at the same speed for another 4 hours in the afternoon. How many cubic meters of soil does this excavator dig in a day?
一台挖掘机上午工作3小时共挖土315方，下午以同样的速度又工作了4小时，这台挖掘机全天共挖土多少方？
<gadget id="calculator">315 / 3</gadget>
<output>105</output>

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

<gadget id="calculator">105 * 7</gadget>
<output>735</output>

<result>735</result>