No problem, we've got 8039 and 8780 to multiply
8039 × 8780 = 8780 × (8039)
+ 8780 × 9 that is equal 79020
+ 8780 × 30 that equals 263400
+ 8780 × 000 which equals 0
+ 8780 × 8000 that results in 70240000

= 70582420
