Alright, let's work through 72343708 times 78678505 step by step
72343708 × 78678505 = 78678505 × (72343708)
+ 78678505 × 8 which equals 629428040
+ 78678505 × 00 that results in 0
+ 78678505 × 700 what gives us 55074953500
+ 78678505 × 3000 that equals 236035515000
+ 78678505 × 40000 what gives us 3147140200000
+ 78678505 × 300000 producing 23603551500000
+ 78678505 × 2000000 which equals 157357010000000
+ 78678505 × 70000000 that equals 5507495350000000

= 5691894791596540
