No problem, we've got 9859 and 8157 to multiply
9859 × 8157 = 8157 × (9859)
+ 8157 × 9 giving us 73413
+ 8157 × 50 that is equal 407850
+ 8157 × 800 that is equal 6525600
+ 8157 × 9000 giving us 73413000

= 80419863
