There are 5 rows of peach trees, 8 in each row, and 3 more rows are planted. How many peach trees are there now?
有5行桃树，每行8棵，又栽了3行，现在一共有多少棵．
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>