Alright, let's work through 27157463 times 63154749 step by step
27157463 × 63154749 = 63154749 × (27157463)
+ 63154749 × 3 which equals 189464247
+ 63154749 × 60 yielding 3789284940
+ 63154749 × 400 giving us 25261899600
+ 63154749 × 7000 resulting in 442083243000
+ 63154749 × 50000 that is equal 3157737450000
+ 63154749 × 100000 giving us 6315474900000
+ 63154749 × 7000000 that results in 442083243000000
+ 63154749 × 20000000 what gives us 1263094980000000

= 1715122759241787
