Uncle Wang's family has two rectangular vegetable plots. 30 rows of cabbage are planted in the first field, and 50 rows of cabbage are planted in the second field. If there are 155 cabbages in each row, how many cabbages are planted in the two fields?
王大伯家有两块长方形菜地．第一块地里种了30行白菜，第二块地里种了50行白菜．如果每行白菜都是155棵，两块地里一共种了多少棵白菜？
<gadget id="calculator">30 + 50</gadget>
<output>80</output>

<gadget id="calculator">80 * 155</gadget>
<output>12_400</output>

<result>12_400</result>