Alright, let's work through 1658 times 258 step by step
1658 × 258 = 258 × (1658)
+ 258 × 8 giving us 2064
+ 258 × 50 producing 12900
+ 258 × 600 giving us 154800
+ 258 × 1000 what gives us 258000

= 427764
