The income from growing fish and rice on a piece of land is 2,500 yuan, which is 100 yuan more than three times the income from growing potatoes. How much can I earn from growing potatoes on this land?
一块地种鱼米可收入2500元，比种土豆收入的3倍还多100元．这块地种土豆可收入多少元？
<gadget id="calculator">2_500 - 100</gadget>
<output>2_400</output>

<gadget id="calculator">2_400 / 3</gadget>
<output>800</output>

<result>800</result>