Dongmen Primary School spent 34.28 yuan on math reference books and 33.76 yuan on Chinese reference books. He paid the salesperson 70 yuan. How much should he get back?
东门小学买数学参考书用了34.28元，买语文参考书用了33.76元，他付给售货员70元，应找回多少钱？
<gadget id="calculator">34.28 + 33.76</gadget>
<output>68.04</output>

<gadget id="calculator">70 - 68.04</gadget>
<output>1.96</output>

<result>1.96</result>