No problem, we've got 7789 and 5245 to multiply
7789 × 5245 = 5245 × (7789)
+ 5245 × 9 yielding 47205
+ 5245 × 80 what gives us 419600
+ 5245 × 700 that is equal 3671500
+ 5245 × 7000 giving us 36715000

= 40853305
