Li Ming is 164 centimeters tall this year, 4 centimeters taller than last year. How much is he taller this year than last year?
李明今年身高是164厘米，比去年长高了4厘米，今年比去年长高了百分之几？
<gadget id="calculator">164 - 4</gadget>
<output>160</output>

<gadget id="calculator">4 / 160</gadget>
<output>1/40 = around 0.025</output>

<result>1/40 = around 0.025</result>