Xiaoqing has a bottle of chocolate, 3 pieces are missing when 7 pieces are counted, 2 pieces are too many when 5 pieces are counted, and 3 pieces are just right, how many pieces of chocolate are there at least in this bottle?
小青有一瓶巧克力，7粒一数还少3粒，5粒一数又多2粒，3粒一数正好，这瓶巧克力至少有多少粒？
<gadget id="calculator">7 * 5 * 3</gadget>
<output>105</output>

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

<result>102</result>