How many equilateral triangles with side length 7cm can be made using a wire length 126cm.
用一根长126cm的铁丝，可以做多少个边长为7cm的等边三角形．
<gadget id="calculator">7 * 3</gadget>
<output>21</output>

<gadget id="calculator">126 / 21</gadget>
<output>6</output>

<result>6</result>