No problem, we've got 7971 and 5431 to multiply
7971 × 5431 = 5431 × (7971)
+ 5431 × 1 which equals 5431
+ 5431 × 70 that is equal 380170
+ 5431 × 900 that equals 4887900
+ 5431 × 7000 which equals 38017000

= 43290501
