Alright, let's work through 87428154 times 28609225 step by step
87428154 × 28609225 = 28609225 × (87428154)
+ 28609225 × 4 which equals 114436900
+ 28609225 × 50 which equals 1430461250
+ 28609225 × 100 producing 2860922500
+ 28609225 × 8000 what gives us 228873800000
+ 28609225 × 20000 that equals 572184500000
+ 28609225 × 400000 which equals 11443690000000
+ 28609225 × 7000000 that equals 200264575000000
+ 28609225 × 80000000 giving us 2288738000000000

= 2501251729120650
