There is a box of chocolates, there are 7 pieces of 7 pieces and there are 4 pieces left, and the number of 5 pieces and 5 pieces is 3 pieces less. How many pieces of chocolate are there at least in this box?
有一盒巧克力，7粒7粒地数还余4粒，5粒5粒地数又少3粒，这盒巧克力至少有多少粒？
<gadget id="calculator">7 * 5</gadget>
<output>35</output>

<gadget id="calculator">35 - 3</gadget>
<output>32</output>

<result>32</result>