Can you please help me with my homework question in trying to determine how to calculate ROI and investment gained or provide me with an example of how to Calculate ROI and investment gained?

T-Mobile Income Statement without investment 2015 32,053,000.00 $ 9,344,000.00 $ 22,709,000.00 $ 2016 37,242,000.00 10,819,000.00 26,423,000.00 $10,189,000.00 $4,688,000.00 $7,832,000.00 $8,868,000.00 $6,243,000.00 $11,312,000.00 Net Interest Expense $1,085,000.00 $1,418,000.00 EBT $6,747,000.00 $9,894,000.00 Tax Expense $245,000.00 $867,000.00 Net Income $6,502,000.00 $9,027,000.00 Revenue COGS Gross Profit SGA Dep + Amort Operating Income Assumptions: Revenue Growth COGS % of Revenue SGA % of Revenue Tax Rate - Used 30% average $ $ $ 2017 2018 $ 39,476,520.00 $ 41,845,111.20 $ $ 11,359,950.00 $ 11,927,947.50 $ $ 28,116,570.00 $ 29,917,163.70 $ 2019 44,355,817.87 12,524,344.88 31,831,473.00 $9,311,400.00 $6,867,300.00 $11,937,870.00 $9,776,970.00 $7,554,030.00 $12,586,163.70 $10,265,818.50 $8,309,433.00 $13,256,221.50 $1,545,620.00 $1,684,725.80 $1,836,351.12 $10,392,250.00 $10,901,437.90 $11,419,870.38 $3,117,675.00 $3,270,431.37 $3,425,961.11 $7,274,575.00 $7,631,006.53 $7,993,909.26 6.00% 5.00% 7.00% 6.00% 5.00% 7.00% 6.00% 5.00% 7.00% T-Mobile Income Statement without investment 2015 32,053,000.00 $ 9,344,000.00 $ 22,709,000.00 $ 2016 37,242,000.00 10,819,000.00 26,423,000.00 $10,189,000.00 $8,868,000.00 $4,688,000.00 $7,832,000.00 $6,243,000.00 $11,312,000.00 Net Interest Expense $1,085,000.00 $1,418,000.00 EBT $6,747,000.00 $9,894,000.00 Tax Expense $245,000.00 $867,000.00 Net Income $6,502,000.00 $9,027,000.00 Revenue COGS Gross Profit SGA System Upgrade Dep + Amort Operating Income Assumptions: Revenue Growth COGS % of Revenue SGA % of Revenue Tax Rate - Used 30% average $ $ $ 2017 2018 $ 39,476,520.00 $ 41,845,111.20 $ $ 11,359,950.00 $ 11,927,947.50 $ $ 28,116,570.00 $ 29,917,163.70 $ 2019 44,355,817.87 12,524,344.88 31,831,473.00 $9,311,400.00 $902,700.00 $6,867,300.00 $11,937,870.00 $9,776,970.00 $727,457.50 $7,554,030.00 $12,586,163.70 $10,265,818.50 $763,100.65 $8,309,433.00 $13,256,221.50 $1,545,620.00 $1,684,725.80 $1,836,351.12 $10,392,250.00 $10,901,437.90 $11,419,870.38 $3,117,675.00 $3,270,431.37 $3,425,961.11 $7,274,575.00 $7,631,006.53 $7,993,909.26 6.00% 5.00% 7.00% 6.00% 5.00% 7.00% 6.00% 5.00% 7.00% Investment Amount Money Gained From Investment $2,642,300,000 ROI 2017 ROI 2018 ROI 2019