Xiao Ming goes to the sporting goods store to buy table tennis balls. If he buys 10 table tennis balls, the difference is 8.9 yuan, and if he buys 7 pieces, there is still 1.6 yuan left. How much money does Xiao Ming bring?
小明去体育用品店买乒乓球，如果买10个还差8.9元，买7个还剩1.6元，小明带了多少钱？
<gadget id="calculator">8.9 + 1.6</gadget>
<output>10.5</output>

<gadget id="calculator">10 - 7</gadget>
<output>3</output>

<gadget id="calculator">10.5 / 3</gadget>
<output>3.5</output>

<gadget id="calculator">3.5 * 10</gadget>
<output>35</output>

<gadget id="calculator">35 - 8.9</gadget>
<output>26.1</output>

<result>26.1</result>