No problem, we've got 1397 and 8352 to multiply
1397 × 8352 = 8352 × (1397)
+ 8352 × 7 what gives us 58464
+ 8352 × 90 what gives us 751680
+ 8352 × 300 what gives us 2505600
+ 8352 × 1000 that results in 8352000

= 11667744
