<prompt> Human: Let say that youre part way into a 30 yr mortgage for 300,000 and suddenly decide to make a large payment. Well keep this round numbers for simplicity. If you were to suddenly make a 100,000 payment towards the loan, how would this typically alter the monthly payments that follow it? I figure it either:1 Keeps the monthly payments the same but increases the amount that goes towards the principal with each payment rather than the interest, resulting in a quicker payoff?or2 Does it reduce the monthly payments so that the loan matures on the same date?  <response>: The payments should stay the same and it would move up the payoff date. The out of cycle payment is immediately applied to the principal. 