Alright, let's work through 99918134 times 53799978 step by step
99918134 × 53799978 = 53799978 × (99918134)
+ 53799978 × 4 that is equal 215199912
+ 53799978 × 30 giving us 1613999340
+ 53799978 × 100 that results in 5379997800
+ 53799978 × 8000 that is equal 430399824000
+ 53799978 × 10000 that equals 537999780000
+ 53799978 × 900000 yielding 48419980200000
+ 53799978 × 9000000 which equals 484199802000000
+ 53799978 × 90000000 that is equal 4841998020000000

= 5375593411001052
