Any help with splitting this script into 2 client and server sided?

So I have this code that client sided, that gives you a money tool depending on the money you put it, but I need it give the money value to the money tool, server sided, but im confused on how i would split this up, any help? Here is the script.

local currency = "Cash" -- Change this to the currency you want to use

local button = script.Parent
local setter = button.Parent.AmountBox
debounce = false

function chaching()
    button.Image = "http://www.roblox.com/asset/?id=96539788"
    wait(1)
    button.Image = "http://www.roblox.com/asset/?id=96539352"
end

function errormessage()
    setter.ErrorText1.Visible = true
    wait(3)
    setter.ErrorText1.Visible = false
end

function notenough()
    setter.ErrorText2.Visible = true
    wait(3)
    setter.ErrorText2.Visible = false
end

function onClick()
    if debounce == false then
        local player = button.Parent.Parent.Parent.Parent
        if tonumber(setter.Text) and tonumber(setter.Text) % 1 == 0 and tonumber(setter.Text) >= 1 then
            local amount = setter.Text
            local cash = player.leaderstats:FindFirstChild(currency)
            if tonumber(amount) <= cash.Value or tonumber(amount) == cash.Value then
                cash.Value = cash.Value - tonumber(amount)
                wait()
                player.leaderstats.Cash.Value = player.leaderstats.Cash.Value 
                local bag = game.Lighting.Money:clone()
                bag.Parent = player:FindFirstChild("Backpack")
                bag.MoneyValue.Value = amount
                debounce = true
                spawn(chaching)
                wait(5)
                debounce = false
            else
            notenough()
            end
        else
            errormessage()
        end
    end
end

button.MouseButton1Click:connect(onClick)