There are 90 male students in the fifth grade of Hongxing Primary School. The number of boys is 1.2 times the number of girls, how many girls are there? (solution by equation)
红星小学五年级有男学生90人．男生人数是女生人数的1.2倍，女生有多少人？(用方程解)
<gadget id="calculator">90 / 1.2</gadget>
<output>75</output>

<result>75</result>