No problem, we've got 83213492 and 80473402 to multiply
83213492 × 80473402 = 80473402 × (83213492)
+ 80473402 × 2 producing 160946804
+ 80473402 × 90 resulting in 7242606180
+ 80473402 × 400 what gives us 32189360800
+ 80473402 × 3000 which equals 241420206000
+ 80473402 × 10000 giving us 804734020000
+ 80473402 × 200000 that equals 16094680400000
+ 80473402 × 3000000 resulting in 241420206000000
+ 80473402 × 80000000 which equals 6437872160000000

= 6696472793539784
