The four wooden sticks are 16cm, 20cm, 24cm, and 48cm. They should be cut into the same small sticks, and there should be no surplus. What is the longest centimeter of each small stick.
四根木棒16cm，20cm，24cm，48cm，要把它们截成同样的小棒，不能有剩余，每跟小棒最长是多少厘米．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>