(A and B are not 0) (1/4) of A number is equal to (1/6) of B number, and (1/5) of A number is compared with (1/7) of B number. What is the number of B number? big
(甲、乙均不为0)甲数的(1/4)等于乙数的(1/6)，甲数的(1/5)和乙数的(1/7)比较，乙数的多少大
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>