Alright, let's work through 21044707 times 71217293 step by step
21044707 × 71217293 = 71217293 × (21044707)
+ 71217293 × 7 yielding 498521051
+ 71217293 × 00 yielding 0
+ 71217293 × 700 that results in 49852105100
+ 71217293 × 4000 resulting in 284869172000
+ 71217293 × 40000 that results in 2848691720000
+ 71217293 × 000000 that is equal 0
+ 71217293 × 1000000 resulting in 71217293000000
+ 71217293 × 20000000 producing 1424345860000000

= 1498747064518151
