No problem, we've got 1864 and 5428 to multiply
1864 × 5428 = 5428 × (1864)
+ 5428 × 4 what gives us 21712
+ 5428 × 60 which equals 325680
+ 5428 × 800 yielding 4342400
+ 5428 × 1000 resulting in 5428000

= 10117792
