number minus its (1/4) is 18, what is this number.
一个数减去它的(1/4)是18，这个数是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">18 / (3/4)</gadget>
<output>24</output>

<result>24</result>