For Each of the Following, Mentally Calculate the Exact Answer $3618 + 2472 - 2618 - 472 =$

For each of the following, mentally calculate the exact answer and write it in the blank. Use number sense. Then write enough to make your thought process clear. A) $3618 + 2472 - 2618 - 472 =$$\underline{\quad\quad}$
B) $( 25 \times 29 ) + ( 25 \times 11 ) =$$\underline{\quad\quad}$