Xiao Ming has some New Year's money deposited with his mother, and his mother stipulates that he can only withdraw 20% of the balance at most each time. When the new semester starts, Xiao Ming takes 20% from his mother to buy school supplies. When Xiao Ming got the money from his mother, he found that it was 8 yuan less than the first time. So how much money is there for Xiaoming's New Year's Eve?
小明有一些压岁钱寄存在妈妈那里，妈妈规定每次最多只取余额的20%，新学期开学时小明从妈妈那里取了20%买学习用品，"三．八"节到了，小明又向妈妈要了20%，小明从妈妈手里拿到钱时发现比第一次少了8元．那么妈妈那里还存有小明的压岁钱多少元．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (1/5)</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">(1/5) - (4/25)</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">8 / (1/25)</gadget>
<output>200</output>

<gadget id="calculator">200 * (1/5)</gadget>
<output>40</output>

<gadget id="calculator">40 - 8</gadget>
<output>32</output>

<gadget id="calculator">40 + 32</gadget>
<output>72</output>

<gadget id="calculator">200 - 72</gadget>
<output>128</output>

<result>128</result>