There are 45 students in Class 1, of which boys account for 4/9 of the class, and then 5 boys are transferred. What percentage of the class are boys?
六1班有45名学生，其中男生占全班人数的(4/9)，后来又转来5名男生，这时男生占全班人数的几分之几？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">45 * (4/9)</gadget>
<output>20</output>

<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">45 + 5</gadget>
<output>50</output>

<gadget id="calculator">25 / 50</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>