No problem, we've got 20957477 and 19734481 to multiply
20957477 × 19734481 = 19734481 × (20957477)
+ 19734481 × 7 that results in 138141367
+ 19734481 × 70 what gives us 1381413670
+ 19734481 × 400 that is equal 7893792400
+ 19734481 × 7000 which equals 138141367000
+ 19734481 × 50000 yielding 986724050000
+ 19734481 × 900000 giving us 17761032900000
+ 19734481 × 0000000 giving us 0
+ 19734481 × 20000000 that is equal 394689620000000

= 413584931664437
