Alright, let's work through 39087679 times 93609621 step by step
39087679 × 93609621 = 93609621 × (39087679)
+ 93609621 × 9 that equals 842486589
+ 93609621 × 70 that equals 6552673470
+ 93609621 × 600 resulting in 56165772600
+ 93609621 × 7000 that is equal 655267347000
+ 93609621 × 80000 yielding 7488769680000
+ 93609621 × 000000 giving us 0
+ 93609621 × 9000000 yielding 842486589000000
+ 93609621 × 30000000 resulting in 2808288630000000

= 3658982816959659
