Alright, let's work through 48888739 times 13716397 step by step
48888739 × 13716397 = 13716397 × (48888739)
+ 13716397 × 9 what gives us 123447573
+ 13716397 × 30 which equals 411491910
+ 13716397 × 700 that equals 9601477900
+ 13716397 × 8000 that equals 109731176000
+ 13716397 × 80000 that results in 1097311760000
+ 13716397 × 800000 producing 10973117600000
+ 13716397 × 8000000 what gives us 109731176000000
+ 13716397 × 40000000 yielding 548655880000000

= 670577352953383
