We're going to solve 4378 multiplied by 4105
4378 × 4105 = 4105 × (4378)
+ 4105 × 8 producing 32840
+ 4105 × 70 that is equal 287350
+ 4105 × 300 that equals 1231500
+ 4105 × 4000 that is equal 16420000

= 17971690
