There are two two-digit numbers, A and B, and (2/5) of A is equal to (1/4) of B. What is the maximum difference between A and B?
有甲、乙两个两位数，甲数的(2/5)等于乙数的(1/4)，那么甲、乙两个数的差最大是多少．
<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">96 - 60</gadget>
<output>36</output>

<result>36</result>