A rectangular piece of paper with a length of 18 cm and a width of 12 cm should be divided into small squares of equal size without any residue. How many at least can be divided into
一张长18厘米，宽12厘米的长方形纸，要分成大小相等的小正方形，且没有剩余．最少可以分成多少个
<gadget id="calculator">18 / 6</gadget>
<output>3</output>

<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>