In a pile of chess pieces, there are 6 pieces and 6 pieces and 4 pieces, 9 pieces and 9 pieces and 4 pieces, and 10 pieces and 10 pieces and 8 pieces. How many pieces are there at least in this pile?
一堆棋子，6个6个数余4个，9个9个数余4个，10个10个数余8个，这堆棋子至少有多少个？
<gadget id="calculator">2 * 3 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">54 + 4</gadget>
<output>58</output>

<result>58</result>