Hope Primary School had 1,200 students last year, and the number of students this year has increased by 15% compared to last year; how many students are there this year?
希望小学去年有学生1200人，今年学生人数比去年增加了15%；今年有学生多少人？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">1_200 * (23/20)</gadget>
<output>1_380</output>

<result>1_380</result>