Alright, let's work through 63954479 times 27667495 step by step
63954479 × 27667495 = 27667495 × (63954479)
+ 27667495 × 9 resulting in 249007455
+ 27667495 × 70 what gives us 1936724650
+ 27667495 × 400 resulting in 11066998000
+ 27667495 × 4000 resulting in 110669980000
+ 27667495 × 50000 producing 1383374750000
+ 27667495 × 900000 which equals 24900745500000
+ 27667495 × 3000000 what gives us 83002485000000
+ 27667495 × 60000000 yielding 1660049700000000

= 1769460227960105
