The summer vacation is coming to an end, and the new semester is about to start. A department store stationery store offers a 20% discount on all student supplies. If you hold a VIP card, you can also enjoy a 5% discount on the basis of the discount. Congcong's mother bought a schoolbag with a price of 150 yuan with the VIP card. How much should she pay?
暑期快要结束，新学期即将开学．某百货文具店对所有的学生用品都打八折．如果持有贵宾卡，还可以在打折的基础上再享受5%的优惠．聪聪的妈妈持贵宾卡买了一个标价150元的书包，应付多少钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">156 * (4/5) * (19/20)</gadget>
<output>2_964/25 = around 118.56</output>

<result>2_964/25 = around 118.56</result>