There are 180 girls in Nandamen Primary School, which is less than the number of boys (3/5). How many boys are there?
南大门小学有女生180名，比男生人数少(3/5)，男生有多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">180 / (2/5)</gadget>
<output>450</output>

<result>450</result>