There are 400 kilograms of cucumbers and tomatoes in the vegetable market. The ratio of the weight of the tomatoes to the weight of the cucumbers is 5:3. How much is the weight of the tomatoes?
菜市场有黄瓜和西红柿一共有400千克，西红柿重量和黄瓜重量的比是5：3，西红柿重量是多少千克？
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">400 / 8</gadget>
<output>50</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<result>250</result>