Alright, let's work through 27553988 times 67776999 step by step
27553988 × 67776999 = 67776999 × (27553988)
+ 67776999 × 8 yielding 542215992
+ 67776999 × 80 resulting in 5422159920
+ 67776999 × 900 that results in 60999299100
+ 67776999 × 3000 what gives us 203330997000
+ 67776999 × 50000 producing 3388849950000
+ 67776999 × 500000 what gives us 33888499500000
+ 67776999 × 7000000 that results in 474438993000000
+ 67776999 × 20000000 that results in 1355539980000000

= 1867526617122012
