Xin'an Primary School has 450 students, 10% less than Sunshine Primary School. How many students does Sunshine Primary School have?
新安小学有450名学生，比阳光小学少10%．阳光小学有多少名学生？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">450 / (9/10)</gadget>
<output>500</output>

<result>500</result>