Two stores, A and B, sell TV sets. In May, store A sold 420 sets, which was 1/6 more than store B. How many sets did store B sell? How many.
甲乙两店出售电视机，五月份甲店共售出420台，比乙店多售出(1/6)，乙店售出多少台？多少．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">420 / (7/6)</gadget>
<output>360</output>

<result>360</result>