No problem, we've got 8428 and 1159 to multiply
8428 × 1159 = 1159 × (8428)
+ 1159 × 8 that results in 9272
+ 1159 × 20 that is equal 23180
+ 1159 × 400 what gives us 463600
+ 1159 × 8000 which equals 9272000

= 9768052
