No problem, we've got 84027208 and 21047240 to multiply
84027208 × 21047240 = 21047240 × (84027208)
+ 21047240 × 8 that results in 168377920
+ 21047240 × 00 giving us 0
+ 21047240 × 200 that is equal 4209448000
+ 21047240 × 7000 giving us 147330680000
+ 21047240 × 20000 producing 420944800000
+ 21047240 × 000000 yielding 0
+ 21047240 × 4000000 producing 84188960000000
+ 21047240 × 80000000 that equals 1683779200000000

= 1768540813305920
