Alright, let's work through 61509878 times 72279687 step by step
61509878 × 72279687 = 72279687 × (61509878)
+ 72279687 × 8 giving us 578237496
+ 72279687 × 70 which equals 5059578090
+ 72279687 × 800 yielding 57823749600
+ 72279687 × 9000 giving us 650517183000
+ 72279687 × 00000 giving us 0
+ 72279687 × 500000 that equals 36139843500000
+ 72279687 × 1000000 that equals 72279687000000
+ 72279687 × 60000000 producing 4336781220000000

= 4445914729248186
