Hope that there were 325 students in the sixth grade of elementary school last year. This year, the number of boys increased by 15, and the number of girls decreased by 5%. The total number increased by 6. So how many boys are there this year?
希望小学六年级去年有325人，今年男生增加15人，女生减少5%，总人数增加6人，那么今年男生多少人？
<gadget id="calculator">15 - 6</gadget>
<output>9</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">9 / (1/20)</gadget>
<output>180</output>

<gadget id="calculator">325 - 180</gadget>
<output>145</output>

<gadget id="calculator">145 + 15</gadget>
<output>160</output>

<result>160</result>