There are 240 students in the sixth grade of our school in the first semester, of which boys accounted for (1/4), and a number of boys were transferred in this semester, so that the number of boys accounted for (1/3) of the total number of students in the sixth grade. How many students were transferred in this semester? boys?
我校六年级上学期有学生240人，其中男生占(1/4)，本学期又转来若干名男生，这样男生人数占六年级总人数的(1/3)，本学期转来多少名男生？
<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">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/4) / (2/3)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">240 * (9/8)</gadget>
<output>270</output>

<gadget id="calculator">270 - 240</gadget>
<output>30</output>

<result>30</result>