Xiao Ming bought a box of watercolor pens and spent 16 yuan, 80 cents and 5 cents, and expressed the amount in decimals.
小明买了一盒水彩笔花了16元8角5分，用小数表示是多少元．
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">16 + (4/5) + (1/20)</gadget>
<output>337/20 = around 16.85</output>

<result>337/20 = around 16.85</result>