There are 54 students in Class 1, the number of boys (1/4) is equal to the number of girls (1/5), how many fewer boys than girls?
六1班有学生54人，男生人数的(1/4)与女生人数的(1/5)相等，男生比女生少多少人．
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

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

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">54 * (1/9)</gadget>
<output>6</output>

<result>6</result>