How is multiplication using partial products different from multiplication using regrouping? how are they similar?

Long division the problem is 40 ➗ 348 = ?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.