Alright, let's work through 1992 times 3636 step by step
1992 × 3636 = 3636 × (1992)
+ 3636 × 2 which equals 7272
+ 3636 × 90 giving us 327240
+ 3636 × 900 that is equal 3272400
+ 3636 × 1000 yielding 3636000

= 7242912
