There are 324 students in the fifth and sixth grades of a certain elementary school. Boys account for (5/9) in the fifth grade and (4/9) in the sixth grade. There are as many girls in the two grades. How many boys are there in the two grades?
某小学五年级和六年级共有324人，五年级中男生占了(5/9)，六年级中男生占了(4/9)，两个年级的女生一样多．则两个年级共有多少个男生？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">324 * (4/9)</gadget>
<output>144</output>

<gadget id="calculator">324 - 144</gadget>
<output>180</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9) - (4/9)</gadget>
<output>0</output>

<gadget id="calculator">1 + 0</gadget>
<output>1</output>

<gadget id="calculator">180 / 1</gadget>
<output>180</output>

<gadget id="calculator">180 * (5/9)</gadget>
<output>100</output>

<gadget id="calculator">324 - 180</gadget>
<output>144</output>

<gadget id="calculator">144 * (4/9)</gadget>
<output>64</output>

<gadget id="calculator">100 + 64</gadget>
<output>164</output>

<result>164</result>