During the festival, the original price of Nestle milk powder is 160 yuan, and it is sold at a 5% discount. How much is it cheaper to buy 5 cans?
节日期间，雀巢奶粉原价160元，按九五折出售，买5罐比原来便宜多少钱？
<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">1 - (19/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">160 * (1/20) * 5</gadget>
<output>40</output>

<result>40</result>