Alright, let's work through 7278 times 7236 step by step
7278 × 7236 = 7236 × (7278)
+ 7236 × 8 resulting in 57888
+ 7236 × 70 resulting in 506520
+ 7236 × 200 that is equal 1447200
+ 7236 × 7000 what gives us 50652000

= 52663608
