Alright, let's work through 7839 times 8230 step by step
7839 × 8230 = 8230 × (7839)
+ 8230 × 9 yielding 74070
+ 8230 × 30 that is equal 246900
+ 8230 × 800 that results in 6584000
+ 8230 × 7000 resulting in 57610000

= 64514970
