It is known that ○*△=4800, △/15=40, then, ○=how much.
已知○*△=4800，△/15=40，那么，○=多少．
<gadget id="calculator">40 * 15</gadget>
<output>600</output>

<gadget id="calculator">4_800 / 600</gadget>
<output>8</output>

<result>8</result>