(6/7) of the number A is the number B, and the number B is 42. What is the number A?
甲数的(6/7)是乙数，乙数是42，甲数是多少？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">42 / (6/7)</gadget>
<output>49</output>

<result>49</result>