Alright, let's work through 72102167 times 1798049 step by step
72102167 × 1798049 = 1798049 × (72102167)
+ 1798049 × 7 what gives us 12586343
+ 1798049 × 60 that results in 107882940
+ 1798049 × 100 what gives us 179804900
+ 1798049 × 2000 that results in 3596098000
+ 1798049 × 00000 resulting in 0
+ 1798049 × 100000 giving us 179804900000
+ 1798049 × 2000000 that is equal 3596098000000
+ 1798049 × 70000000 yielding 125863430000000

= 129643229272183
