Client 1 made 10 lots of trading operations by EURUSD pair. Your income amounts to 10 x $20 = $200
Client 2 made 100 lots of trading operations by EURUSD pair. Your income amounts to 100 x $20 = $2,000
Client 3 made 200 lots of trading operations by EURUSD pair. Your income amounts to 200 x $20 = $4,000
Your income: 200+2,000+4,000 = $6,200
You attracted an affiliate, whose clients also conducted trading operations:
Client 4 made 100 lots of trading operations by EURUSD pair. His income amounts to 100 x $20 = $2,000
Client 5 made 300 lots of trading operations by EURUSD pair. His income amounts to 300 x $20 = $6,000
Your subaffiliate's income: 2,000 + 6,000 = $8,000
Total - your income per month amounts to: $7 000
Income = Commission from you clients' work + 10% of commission of your affiliates = 6,200 + 800 = $7,000