The vegetable market shipped 315 kilograms of tomatoes, and the weight of the radishes was four times that of the tomatoes. How many kilograms less were the tomatoes than the radishes?
菜市场运来西红柿315千克，运来萝卜的重量是西红柿的4倍，西红柿比萝卜少多少千克？
<gadget id="calculator">315 * 4</gadget>
<output>1_260</output>

<gadget id="calculator">1_260 - 315</gadget>
<output>945</output>

<result>945</result>