Mom bought a bottle of oil in the supermarket, Xiao Ming weighed it with the scale at home, and the bottle weighed 2450 grams. A few days later, my mother used up 1/3 of the bottle of oil for cooking. At this time, Xiao Ming weighed it again, and now the bottle weighs 1650 grams. How many grams of oil (not even the bottle) is in this bottle of oil?
妈妈在超市买回一瓶油，小明用家里的秤称了一下，连瓶重2450克．几天后，妈妈炒菜用去了这瓶油的(1/3)，这时小明又称了一下，现在连瓶重1650克．这瓶油原来有油(不连瓶)多少克？
<gadget id="calculator">2_450 - 1_650</gadget>
<output>800</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">800 / (1/3)</gadget>
<output>2_400</output>

<result>2_400</result>