There are three people, A, B, and C. A’s money is the sum of B and C’s money (1/3), B’s money is the sum of A and C’s money (1/4), and C’s money is the three people’s money Number and ((())/(())).
甲、乙、丙三人，甲的钱数是乙丙两人钱数和的(1/3)，乙的钱数是甲丙和的(1/4)，丙的钱数是三人钱数和的((())/(()))．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

<result>11/20 = around 0.55</result>