Alright, let's work through 87021300 times 62974990 step by step
87021300 × 62974990 = 62974990 × (87021300)
+ 62974990 × 0 what gives us 0
+ 62974990 × 00 that is equal 0
+ 62974990 × 300 that equals 18892497000
+ 62974990 × 1000 that results in 62974990000
+ 62974990 × 20000 that results in 1259499800000
+ 62974990 × 000000 resulting in 0
+ 62974990 × 7000000 giving us 440824930000000
+ 62974990 × 80000000 that results in 5037999200000000

= 5480165497287000
