Pack a bunch of balls into four boxes, among which (1/5) is put into box A, (1/3) is put into box B, and the balls put into box C are (3) of the total number of balls in box A and box B /4), put 10 balls in the box, how many balls are there in total?
把一堆皮球分装在四个盒子中，其中(1/5)放入甲盒，(1/3)放入乙盒，放入丙盒的皮球是甲、乙两盒皮球总数的(3/4)，丁盒放入10个皮球，这堆皮球共多少个？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/5) + (1/3)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(8/15) * (3/4)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/5) - (1/3) - (2/5)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">10 / (1/15)</gadget>
<output>150</output>

<result>150</result>