Alright, let's work through 31172539 times 52421142 step by step
31172539 × 52421142 = 52421142 × (31172539)
+ 52421142 × 9 that results in 471790278
+ 52421142 × 30 what gives us 1572634260
+ 52421142 × 500 that equals 26210571000
+ 52421142 × 2000 that is equal 104842284000
+ 52421142 × 70000 giving us 3669479940000
+ 52421142 × 100000 giving us 5242114200000
+ 52421142 × 1000000 that results in 52421142000000
+ 52421142 × 30000000 which equals 1572634260000000

= 1634100093419538
