I had to look it up, but there are about 7,000 lbs of fuel in each wing in a 737. There is more fuel in fuselage tanks.
Modern planes use a high bypass turbofan engine, so the big bulky part of the engine you see at the front contains the fan (propeller!) which is connected by a shaft to a turbine aft of where the fuel is burned.
The hot gasses hit the turbine in the back, causing it to turn, and the turbine turns the fan (connected to the turbine by that shaft) generating thrust like a...well, propeller driven plane. A smaller portion of the hot gas gets expelled out the back, and that adds to the thrust.
Roughly 50-70% of the thrust from a high bypass turbofan engine comes from the fan blades, and the remainder from the core exhaust.
Each engine overall generates about 20,000 lbs of thrust.
I had to look it up, but there are about 7,000 lbs of fuel in each wing in a 737. There is more fuel in fuselage tanks.
7000 lbs per wing equals about 3175 liters or 838 gallons stored in each wing for a 737, which is about 1,680 gallons.
http://simviation.com/rinfo737.htm
But this site here says that the 737 holds 6,875 gallons or 26,025 liters of fuel max. cap.
That means each wing is weighted down by 23,000 pounds at takeoff, not 7,000 pounds. (in jet fuel gallons to pounds). And again, the specs on a A380 AirBus for fuel are 320,000 liters, which in water (not fuel weight) equals 705,500 lbs in water weight.
(Others calculated in excess of half a million pounds of fuel.)
Where did you get your specs on the 737? It holds over 3400 gallons in each wing, not just 838 gallons that you stated...
Anyway, thanks for the info. It's a LOT Of jet fuel.