No problem, we've got 3157 and 7936 to multiply
3157 × 7936 = 7936 × (3157)
+ 7936 × 7 what gives us 55552
+ 7936 × 50 which equals 396800
+ 7936 × 100 that equals 793600
+ 7936 × 3000 what gives us 23808000

= 25053952
