In the first semester of the fourth grade of the school, boys accounted for 54% of the total number of students. At the beginning of this semester, 3 girls were transferred and 3 boys were transferred. At this time, girls accounted for 48% of the total number. How many boys are there?
学校四年级上学期男生占总人数的54%，本学期初转进3名女生，转走3名男生，这时女生占总人数的48%，现有男生多少人？
<gadget id="calculator">54 / 100</gadget>
<output>27/50 = around 0.54</output>

<gadget id="calculator">48 / 100</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">1 - (12/25)</gadget>
<output>13/25 = around 0.52</output>

<gadget id="calculator">(27/50) - (13/25)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">3 / (1/50)</gadget>
<output>150</output>

<gadget id="calculator">150 * (13/25)</gadget>
<output>78</output>

<result>78</result>