Alright, let's work through 1640900 times 23320596 step by step
1640900 × 23320596 = 23320596 × (1640900)
+ 23320596 × 0 that is equal 0
+ 23320596 × 00 that is equal 0
+ 23320596 × 900 what gives us 20988536400
+ 23320596 × 0000 that is equal 0
+ 23320596 × 40000 giving us 932823840000
+ 23320596 × 600000 that results in 13992357600000
+ 23320596 × 1000000 yielding 23320596000000

= 38266765976400
