After reducing 57 by how much, the smallest integer that can be divisible by 2, 3, and 5 at the same time is obtained.
把57减少多少后就得到能同时被2、3、5整除的最小整数．
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<gadget id="calculator">57 - 30</gadget>
<output>27</output>

<result>27</result>