No problem, we've got 21427254 and 47669256 to multiply
21427254 × 47669256 = 47669256 × (21427254)
+ 47669256 × 4 what gives us 190677024
+ 47669256 × 50 that is equal 2383462800
+ 47669256 × 200 that results in 9533851200
+ 47669256 × 7000 what gives us 333684792000
+ 47669256 × 20000 which equals 953385120000
+ 47669256 × 400000 which equals 19067702400000
+ 47669256 × 1000000 yielding 47669256000000
+ 47669256 × 20000000 that is equal 953385120000000

= 1021421256303024
