Alright, let's work through 85321514 times 17853509 step by step
85321514 × 17853509 = 17853509 × (85321514)
+ 17853509 × 4 yielding 71414036
+ 17853509 × 10 that equals 178535090
+ 17853509 × 500 that results in 8926754500
+ 17853509 × 1000 that is equal 17853509000
+ 17853509 × 20000 that equals 357070180000
+ 17853509 × 300000 that is equal 5356052700000
+ 17853509 × 5000000 yielding 89267545000000
+ 17853509 × 80000000 what gives us 1428280720000000

= 1523288418092626
