62728 +6285628
SgsushbsgsgzvvzgzvzvgzgzgvzgzgzgghhhhhhhGsqhigkygu TV chhkbobjovojvijvovhvihvochvhcihchigvihvohvohvkjv
8,000 multiplied by 8 is 64,000.
80 x 8000 = 640000
The idea is to round each of the numbers - in this case to the nearest multiple of 10 - then do the addition in your head.
58% of 8000= 58% * 8000= 0.58 * 8000= 4,640
20% of 8000 = 20% * 8000 = 0.2 * 8000 = 1600