It is known that the product of two multipliers is 8.5, one of which is 4, and what is the other multiplier.
已知两个乘数的积是8.5，其中一个乘数是4，另一个乘数是多少．
<gadget id="calculator">8.5 / 4</gadget>
<output>2.125</output>

<result>2.125</result>