Alright, let's work through 71985231 times 27624029 step by step
71985231 × 27624029 = 27624029 × (71985231)
+ 27624029 × 1 that equals 27624029
+ 27624029 × 30 resulting in 828720870
+ 27624029 × 200 which equals 5524805800
+ 27624029 × 5000 that equals 138120145000
+ 27624029 × 80000 what gives us 2209922320000
+ 27624029 × 900000 giving us 24861626100000
+ 27624029 × 1000000 that is equal 27624029000000
+ 27624029 × 70000000 that results in 1933682030000000

= 1988522108715699
