We're going to solve 9839 multiplied by 1007
9839 × 1007 = 1007 × (9839)
+ 1007 × 9 that equals 9063
+ 1007 × 30 what gives us 30210
+ 1007 × 800 yielding 805600
+ 1007 × 9000 that results in 9063000

= 9907873
