The store shipped 8 boxes of small case books, each with 150 copies. Small case books accounted for (2/7) of the total number of homework books. How many homework books were shipped in total?
商店运来8箱小楷本，每箱150本．小楷本占作业本总数的(2/7)，一共运来多少本作业本？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">8 / (2/7)</gadget>
<output>28</output>

<gadget id="calculator">150 * 28</gadget>
<output>4_200</output>

<result>4_200</result>