totalMonthlyIncome = monthlyCommissions + monthlyBonuses

monthlyCommissions = personalCommissions + downlineCommissions

monthlyBonuses = ETTcabs + ETLcabs + TCcabs + RVP3cabs + RVP4cabs +SVPcabs

personalCommissions = personalCommissionLevelPercentage * personalBillingVolume

downlineCommissions = level1Commission + level2Commission + level3Commission + level4Commission + level5Commission + level6Commission + level7Commission

level1Commission = .0025 * level1Volume
level2Commission = .0025 * level2Volume
level3Commission = .0025 * level3Volume
level4Commission = .0025 * level4Volume
level5Commission = .0025 * level5Volume
level6Commission = .01   * level6Volume
level7Commission = .07   * level7Volume