Sure thing! Let's multiply 31990954 and 20161202 together
31990954 × 20161202 = 20161202 × (31990954)
+ 20161202 × 4 that is equal 80644808
+ 20161202 × 50 that is equal 1008060100
+ 20161202 × 900 giving us 18145081800
+ 20161202 × 0000 resulting in 0
+ 20161202 × 90000 that results in 1814508180000
+ 20161202 × 900000 which equals 18145081800000
+ 20161202 × 1000000 which equals 20161202000000
+ 20161202 × 30000000 that equals 604836060000000

= 644976085766708
