Alright, let's work through 21273295 times 71328972 step by step
21273295 × 71328972 = 71328972 × (21273295)
+ 71328972 × 5 that equals 356644860
+ 71328972 × 90 giving us 6419607480
+ 71328972 × 200 resulting in 14265794400
+ 71328972 × 3000 yielding 213986916000
+ 71328972 × 70000 producing 4993028040000
+ 71328972 × 200000 which equals 14265794400000
+ 71328972 × 1000000 that equals 71328972000000
+ 71328972 × 20000000 yielding 1426579440000000

= 1517402263402740
