Original: In total , the USA delivered 1,783,573 tons , while 541,937 tons were delivered by the RAF , totaling 2,326,406 tons of food and supplies on 278,228 total flights to Berlin .
Simplified: 278,228 flights were made , and 2,326,406 tons of food and supplies , including more than 1.5 million tons of coal , were delivered to Berlin .