Two numbers, (3/4) of number A is equal to (5/12) of number B, and (2/5) of number A is 45 greater than (1/12) of number B, what is the number of B?
两个数，甲数的(3/4)等于乙数的(5/12)，甲数的(2/5)比乙数的(1/12)大45，则乙数为多少．
<result>324</result>