A taxi in a certain city charges 10 yuan within 3 kilometers, and an additional 1.60 yuan per kilometer after 3 kilometers. How much does it cost for Xiao Ming and his mother to take a taxi to his grandma's house 24 kilometers away?
某城市的出租车在3公里以内收费10元，超过3公里后，每公里加收1.60元．小明和妈妈乘出租车到24公里外的姥姥家去，要花多少元钱？
<gadget id="calculator">24 - 3</gadget>
<output>21</output>

<gadget id="calculator">1.6 * 21</gadget>
<output>33.6</output>

<gadget id="calculator">33.6 + 10</gadget>
<output>43.6</output>

<result>43.6</result>