Using Goal Seek to determine value within Range

Here is my situation (example) in A2 I want to put an amount to transfer. In A3, I have a balance of -$1,406,687.79 In increments of $100,000, i want to use Goal Seek or Scenario Manager or a formula if it is possible, to generate the A2 number that leaves between -$100,000 and -$80,000 in A3.

So, for this example, I would like to be able to generate in A2: $1,300,000 (leaving -$106,687.79 in A3).

Thanks

I'm sorry, i want to leave between -&100,000 and -$180,000 (not -80,000)

Thanks