The product of multiplying the two numbers AB is 1. After moving the decimal point of B two places to the right, it is 1.25. What is the original value of A?
AB两数相乘的积是1，把B的小数点向右移动两位后是1.25，原来A是多少．
<gadget id="calculator">1.25 / 100</gadget>
<output>0.0125</output>

<gadget id="calculator">1 / 0.0125</gadget>
<output>80</output>

<result>80</result>