Alright, let's work through 23964523 times 78096851 step by step
23964523 × 78096851 = 78096851 × (23964523)
+ 78096851 × 3 producing 234290553
+ 78096851 × 20 which equals 1561937020
+ 78096851 × 500 that results in 39048425500
+ 78096851 × 4000 which equals 312387404000
+ 78096851 × 60000 that results in 4685811060000
+ 78096851 × 900000 that results in 70287165900000
+ 78096851 × 3000000 giving us 234290553000000
+ 78096851 × 20000000 that equals 1561937020000000

= 1871553782017073
