There are black and white chess pieces in two boxes, A and B. It is known that there are (4/9) black pieces in box A, and (5/8) white pieces in box B, and the number of pieces in box A is (9/16) of the number of pieces in box B, then the two What fraction is the total number of white pieces in a box of the total number of pieces?
甲、乙两个盒子里都放有黑、白两种颜色的棋子．已知甲盒子里有(4/9)是黑棋子，乙盒子里有(5/8)是白棋子，并且甲盒子里的棋子是乙盒子里的棋子数的(9/16)，那么两个盒子里白棋子的总数是棋子总数的几分之几？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 * (5/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(9/16) * (5/9)</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">(5/8) + (5/16)</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">1 + (9/16)</gadget>
<output>25/16 = around 1.5625</output>

<gadget id="calculator">(15/16) / (25/16)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>