There is a rectangular piece of red silk with a length of 20m and a width of 0.66m. If it is made into a red scarf with a base of 1m and a height of 0.33m, how many pieces can be made?
有一块长20m，宽0.66m的长方形红绸子，把它做成底1m，高0.33m的红领巾，可以做多少条？
<gadget id="calculator">20 * 0.66</gadget>
<output>13.2</output>

<gadget id="calculator">0.33 / 2</gadget>
<output>0.165</output>

<gadget id="calculator">1 * 0.165</gadget>
<output>0.165</output>

<gadget id="calculator">13.2 / 0.165</gadget>
<output>80</output>

<result>80</result>