A watermelon greenhouse has 8 ridges, 35 trees are planted in each ridge, and each tree bears 2 watermelons. How many watermelons are grown in total? (answer in two ways)
一个西瓜大棚有8垄，每垄种35棵，每棵结2个西瓜，一共结多少个西瓜？(用两种方法解答)
<gadget id="calculator">2 * 35 * 8</gadget>
<output>560</output>

<result>560</result>