There were originally 48 students in a class of sixth grade, including 18 girls. After the start of school, how many girls will be transferred to make the number of girls account for (2/5) of the whole class?
六年级某班原来有学生48人，其中女生有18人．开学后来又转来几位女生，才能使女生人数占全班人数的(2/5)？
<gadget id="calculator">48 - 18</gadget>
<output>30</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">30 / (3/5)</gadget>
<output>50</output>

<gadget id="calculator">50 - 48</gadget>
<output>2</output>

<result>2</result>