Two barrels of pesticide water, after pouring 3 kilograms from the big bucket into the small bucket, there is still 4 kilograms more in the big bucket than in the small bucket. How many kilograms is the large pesticide barrel more than the original small barrel?
两桶农药水，从大桶倒入小桶3千克后，大桶里还比小桶里多4千克．大农药桶比原来小桶多多少千克？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<result>10</result>