There were 180 students in the first grade of Xinhua Primary School last year, and this year there are 27 more students than last year. How much is this year more than last year?
新华小学去年一年级有180人，今年比去年增加了27人，今年比去年增加多少．
<gadget id="calculator">27 / 180</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>