Heqiao Primary School has 65 students in the third grade and 85 students in the fourth grade. The number of students in the third and fourth grades is exactly (2/5) of the total number of students in the school. How many people are there in Heqiao Primary School?
何桥小学三年级有学生65人，四年级有学生85人．三四年级人数正好是全校人数的(2/5)．何桥小学全有多少人？
<gadget id="calculator">65 + 85</gadget>
<output>150</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">150 / (2/5)</gadget>
<output>375</output>

<result>375</result>