The Dongguan Vegetable Market shipped in 120 baskets of tomatoes in the morning and 150 baskets in the afternoon, 900 kg less in the morning than in the afternoon. How many kilograms of tomatoes are transported in total throughout the day?
东关菜市场运进每筐质量相等的西红柿，上午运进120筐，下午运进150筐，上午比下午少运900千克．全天共运进西红柿多少千克？
<gadget id="calculator">150 - 120</gadget>
<output>30</output>

<gadget id="calculator">900 / 30</gadget>
<output>30</output>

<gadget id="calculator">120 + 150</gadget>
<output>270</output>

<gadget id="calculator">30 * 270</gadget>
<output>8_100</output>

<result>8_100</result>