square piece of silk fabric can be made into a small square handkerchief with a side length of 18 cm, or a large square handkerchief with a side length of 27 cm. There is nothing left. What is the minimum length of the sides of this square piece of silk cloth?
一块正方形的丝绸布料，既可以做成边长是18厘米的小方手绢，也可以都做成边长是27厘米的大方手绢，都没有剩余．这块正方形丝绸布料的边长至少是多少厘米．
<gadget id="calculator">2 * 3 * 3 * 3</gadget>
<output>54</output>

<result>54</result>