You are given the unknown number which has a quotient of 3 and a remainder of 28. This means that 3 is the whole number from the division of the unknown number and 43 and 28 is the decimal, 3.28. Also, the number is divided by 43 too. Let us denote n as the number so we have n/43. Then equate the n/43 to 3.28.
n/43 = 3.28
n = 43 (3.28)
n = 141.04
The number is 141. 04