There are 378 students in the school this year, an increase of 18 compared with the previous semester. How much is the increase?
学校今年有学生378人，比上学期增加18人，增加了百分之几？
<gadget id="calculator">378 - 18</gadget>
<output>360</output>

<gadget id="calculator">18 / 360</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>