Alright, let's work through 29727835 times 47391137 step by step
29727835 × 47391137 = 47391137 × (29727835)
+ 47391137 × 5 yielding 236955685
+ 47391137 × 30 that results in 1421734110
+ 47391137 × 800 that results in 37912909600
+ 47391137 × 7000 yielding 331737959000
+ 47391137 × 20000 producing 947822740000
+ 47391137 × 700000 producing 33173795900000
+ 47391137 × 9000000 that equals 426520233000000
+ 47391137 × 20000000 giving us 947822740000000

= 1408835901198395
