userLifetimeValue = {
let values = []
for(let i=0; i<averageUserLifetime; i++) {
values[i] = ((dollarPriceStickers * userBuyPerYear))
}
let grossDiscountedProduct = NPVaggregate(discountRate, ...values.map(v => v / velocity))
let grossBurn = values.map(gross => gross * burnRate)
let discountedGrossBurn = NPVaggregate(discountRate, ...grossBurn)
return discountedGrossBurn + grossDiscountedProduct
}