Obviously there is a box of chocolate candies, there are 4 left in a group of 7 pieces, 3 pieces are missing in a group of 5 pieces, and there is no leftover in a group of 3 pieces, how many pieces of chocolate are there at least in this box?
明明有一盒巧克力糖，七粒一组还余4个，5粒一组又少3个，3粒一组正好没有剩余，这盒巧克力至少有多少粒．
<gadget id="calculator">3 * 7 * 5</gadget>
<output>105</output>

<gadget id="calculator">105 - 3</gadget>
<output>102</output>

<result>102</result>