Alright, let's work through 72860124 times 61933072 step by step
72860124 × 61933072 = 61933072 × (72860124)
+ 61933072 × 4 what gives us 247732288
+ 61933072 × 20 that equals 1238661440
+ 61933072 × 100 which equals 6193307200
+ 61933072 × 0000 yielding 0
+ 61933072 × 60000 that equals 3715984320000
+ 61933072 × 800000 what gives us 49546457600000
+ 61933072 × 2000000 that equals 123866144000000
+ 61933072 × 70000000 which equals 4335315040000000

= 4512451305620928
