No problem, we've got 7892 and 1644 to multiply
7892 × 1644 = 1644 × (7892)
+ 1644 × 2 that results in 3288
+ 1644 × 90 resulting in 147960
+ 1644 × 800 yielding 1315200
+ 1644 × 7000 what gives us 11508000

= 12974448
