Alright, let's work through 87243154 times 47124314 step by step
87243154 × 47124314 = 47124314 × (87243154)
+ 47124314 × 4 that is equal 188497256
+ 47124314 × 50 producing 2356215700
+ 47124314 × 100 which equals 4712431400
+ 47124314 × 3000 that results in 141372942000
+ 47124314 × 40000 what gives us 1884972560000
+ 47124314 × 200000 which equals 9424862800000
+ 47124314 × 7000000 what gives us 329870198000000
+ 47124314 × 80000000 that equals 3769945120000000

= 4111273783446356
