Xiaohong's father gave her 2.5 yuan to buy books. When buying books, she found that the money was not enough, so she took some money out of her own savings. Her original savings were 1.2 yuan, which was 4 times what she took out. How much did you spend on the book this time?
小红的父亲给她2.5元买书．买书时她发现这些钱不够，又从自己积蓄的钱中拿出一些才够．她原来的积蓄有1.2元，是拿出的4倍．这次买书花了多少元钱．
<gadget id="calculator">1.2 / 4</gadget>
<output>0.3</output>

<gadget id="calculator">2.5 + 0.3</gadget>
<output>2.8</output>

<result>2.8</result>