The orchard has harvested 45 tons of apples this year, an increase of 5 tons compared with last year. How much is the increase?
果园里今年收获苹果45吨，比去年增产5吨，增产了百分之几？
<gadget id="calculator">45 - 5</gadget>
<output>40</output>

<gadget id="calculator">5 / 40</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>