There are 17 black, white and red beads in a box, and the number of white beads is 1/7 of the red beads, so how many white beads can there be at most in the box?
一个盒子里有黑、白、红三色珠子17颗，其中白珠子的颗数是红珠子的(1/7)，那么盒子里最多有多少颗白珠子．
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">14 * (1/7)</gadget>
<output>2</output>

<result>2</result>