Alright, let's work through 7839 times 1272 step by step
7839 × 1272 = 1272 × (7839)
+ 1272 × 9 giving us 11448
+ 1272 × 30 what gives us 38160
+ 1272 × 800 which equals 1017600
+ 1272 × 7000 that is equal 8904000

= 9971208
