How long will it take us to spend $2.4 trillion?

There was a vote on May 31 to increase the debt limit by $2.4 trillion, which failed. I was just wondering that if it had passed, how long until we take up the issue again. The current limit is 14294 billion, so it would have increased to 16694.

On 9/30/2010, the debt was 13562, and with a projected deficit of 1425 for FY2011, the debt on 9/30/2011 will be 14987. The projected deficit for FY2012 will be 1164, making the total debt 16151 on 9/30/2012. To spend the remaining 543 would take only about 5 months, at the rate of 100 billion per month, so we would be facing the same question of raising the debt limit again on March 1, 2013.

So the answer is that we will spend the 2.4 trillion in only 20 months.