Alright, let's work through 53432718 times 78665579 step by step
53432718 × 78665579 = 78665579 × (53432718)
+ 78665579 × 8 producing 629324632
+ 78665579 × 10 that is equal 786655790
+ 78665579 × 700 producing 55065905300
+ 78665579 × 2000 producing 157331158000
+ 78665579 × 30000 that results in 2359967370000
+ 78665579 × 400000 which equals 31466231600000
+ 78665579 × 3000000 producing 235996737000000
+ 78665579 × 50000000 that is equal 3933278950000000

= 4203315699013722
