Alright, let's work through 7839 times 8473 step by step
7839 × 8473 = 8473 × (7839)
+ 8473 × 9 resulting in 76257
+ 8473 × 30 that equals 254190
+ 8473 × 800 which equals 6778400
+ 8473 × 7000 that results in 59311000

= 66419847
