During the "National Day" period, a certain model of mobile phone was sold at a "95%" discount, which turned out to be 100 yuan cheaper than the original one. How much is the original price of this mobile phone?
某型号的手机"国庆节"期间按"九五"折出售，结果比原来便宜了100元，这部手机原价卖多少元．
<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">100 / (1/20)</gadget>
<output>2_000</output>

<result>2_000</result>