Alright, let's work through 20130536 times 67796374 step by step
20130536 × 67796374 = 67796374 × (20130536)
+ 67796374 × 6 that is equal 406778244
+ 67796374 × 30 that is equal 2033891220
+ 67796374 × 500 that results in 33898187000
+ 67796374 × 0000 resulting in 0
+ 67796374 × 30000 resulting in 2033891220000
+ 67796374 × 100000 producing 6779637400000
+ 67796374 × 0000000 that equals 0
+ 67796374 × 20000000 producing 1355927480000000

= 1364777347476464
