There are 1200 students in a certain elementary school, each student has 5 classes a day, each teacher teaches 4 classes a day, each class has 1 teacher and 30 students, then how many teachers are there in total in this school?
某小学有学生1200人，每个学生一天上5节课，每个老师一天教4节课，每个班有1名教师和30名学生，那么这所学校共有教师多少名．
<gadget id="calculator">1_200 / 30</gadget>
<output>40</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">40 * (5/4)</gadget>
<output>50</output>

<result>50</result>