ROI = 100%*(Revenue-Cost)/Cost

ROI = 100%*($1500-$1000)/$1000 = 50%

You invested $1000 five years ago,
and your revenue will appear 5 years from now.

The cost today is more than $1,000 (let's say $1,250).
The revenue today is less than $1,500 (let's say $1,300).

So the actual ROI = 100%*(1300-1250)/1250 = 100%*50/1250 =4%.

BANK OF NOVA SCOTIA
Profit Sharing:
7%
30%
10%

Let's say I earn $60,000 at the Bank of Nova Scotia. Will this profit sharing plan make a difference to me?

Earnings: $8 billion
Num. Employees: 90,000

7% Earnings: 0.07*$8 billion/90,000 employees = $6,222/employee
10% Earnings: 0.10 * $8 billion/90,000 employees = $8,888/employee
30% Earnings = 0.30 * $8 billion/90,000 employees = $26,666/employee
20% Earnings = 0.20 * $8 billion/90,000 employees = $17,777/employee

High Definition Television
1920bits x 1080bits = 2,073,600 bits 
The human eye takes 20 pictures per second, therefore images that appear more than 20 times per second appear to be continuous video.
Therefore, our network needs a bitrate of 2,073,600*20 = 41,472,000 bits per second