It is known that the product of two factors is 12.8, one of which is 2, and what is the other factor.
已知两个因数的积是12.8，其中一个因数是2，另一个因数是多少．
<gadget id="calculator">12.8 / 2</gadget>
<output>6.4</output>

<result>6.4</result>