In a box of candies, 4 pieces counted by 4 pieces, 6 pieces counted by 6 pieces, and 7 pieces counted by 7 pieces, the result was 1 more. How many candies are there in this box?
一盒糖，4颗4颗地数，6颗6颗地数，7颗7颗地数，结果都是多1颗．这盒糖共有多少颗？
<gadget id="calculator">2 * 2 * 3 * 7</gadget>
<output>84</output>

<gadget id="calculator">84 + 1</gadget>
<output>85</output>

<result>85</result>