No problem, we've got 1234 and 1158 to multiply
1234 × 1158 = 1158 × (1234)
+ 1158 × 4 giving us 4632
+ 1158 × 30 what gives us 34740
+ 1158 × 200 resulting in 231600
+ 1158 × 1000 producing 1158000

= 1428972
