Alright, let's work through 72923661 times 61234223 step by step
72923661 × 61234223 = 61234223 × (72923661)
+ 61234223 × 1 producing 61234223
+ 61234223 × 60 which equals 3674053380
+ 61234223 × 600 giving us 36740533800
+ 61234223 × 3000 what gives us 183702669000
+ 61234223 × 20000 producing 1224684460000
+ 61234223 × 900000 resulting in 55110800700000
+ 61234223 × 2000000 that results in 122468446000000
+ 61234223 × 70000000 producing 4286395610000000

= 4465423719650403
