At the beginning of class 6 and 5 of a certain school, boys accounted for (2/5) of the whole class, and then 3 boys were transferred, and at this time boys accounted for (7/9) of the girls. How many people are there in this class now?
某校六5班开学初男生占全班人数的(2/5)，后来转来3名男生，这时男生占女生人数的(7/9)．现在这个班有多少人．
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(7/9) - (2/3)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">3 / (1/9)</gadget>
<output>27</output>

<gadget id="calculator">27 * (7/9)</gadget>
<output>21</output>

<gadget id="calculator">27 + 21</gadget>
<output>48</output>

<result>48</result>