There are 1260 students in a primary school, of which boys are girls (4/5), how many boys are there in this primary school? (solution by equation)
一所小学共有1260名学生，其中男生是女生人数的(4/5)，该小学有男生多少人？(用方程解)
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">1_260 / (9/5)</gadget>
<output>700</output>

<gadget id="calculator">1_260 - 700</gadget>
<output>560</output>

<result>560</result>