The bubble blower can blow out 80 soap bubbles at a time, once per minute. After the soap bubbles are blown out, half of them will be broken after 1 minute, and (1/20) will not break after 2 minutes, and they will all break after 2.5 minutes. up. After the bubble blower blows 100 times in a row, how many soap bubbles are left unbroken.
吹泡机一次能吹出80个肥皂泡，每分钟吹一次，肥皂泡被吹出后，经过1分钟有一半破掉，经过2分钟还有(1/20)没破，经过2.5分钟后就全破了．吹泡机连续吹100次后，没有破的肥皂泡还有多少个．
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">80 * (1/20)</gadget>
<output>4</output>

<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">4 + 40 + 80</gadget>
<output>124</output>

<result>124</result>