Xiaoyong bought three extracurricular books with a 30% discount. The original prices of these three books were 3.4 yuan, 5.8 yuan, and 4.3 yuan. How much did you save in total?
小勇买了三本打七折的课外书，这三本书原来的定价分别是3.4元、5.8元、4.3元．一共节省了多少钱？
<gadget id="calculator">3.4 + 5.8 + 4.3</gadget>
<output>13.5</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">13.5 * (3/10)</gadget>
<output>4.05</output>

<result>4.05</result>