Xiao Ming’s family has planted 738 peach and apple trees in total. There are 20 peach trees in each row, 16 rows, and 19 apple trees. How many trees are in each row? (List first, then answer.)
小明家一共种了738棵桃树和苹果树，桃树每行20棵，有16行，苹果树有19行，每行多少棵？(先列表整理，再解答．)
<gadget id="calculator">20 * 16</gadget>
<output>320</output>

<gadget id="calculator">738 - 320</gadget>
<output>418</output>

<gadget id="calculator">418 / 19</gadget>
<output>22</output>

<result>22</result>