school had 350 students last year, and this year it has increased by 20% compared to last year. How many students does this school have this year?
一所学校去年有350名学生，今年比去年增加了20%，这所学校今年有学生多少名．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">350 * (6/5)</gadget>
<output>420</output>

<result>420</result>