The minuend is 30 more than the subtrahend, and 24 more than the difference. The subtrahend is the minuend ((())/(())).
被减数比减数多30，比差多24，减数是被减数的((())/(()))．
<gadget id="calculator">30 + 24</gadget>
<output>54</output>

<gadget id="calculator">24 / 54</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>