It is known that A=2*2*3*3*5*5*7*7, among the two-digit factors of A, what is the largest.
已知A=2*2*3*3*5*5*7*7，在A的两位数的因数中，最大的是多少．
<gadget id="calculator">2 * 7 * 7</gadget>
<output>98</output>

<result>98</result>