Answer
7134 R 12
Work Step by Step
21 is larger than 14, so the first step in the long division will be to divide 21 into 149. The quotient of $149 \div 21$ will therefore be placed over the 9 in 149826. Since there must be a digit in the quotient placed above each digit in the dividend, the quotient for $149826 \div 21$ will be a 4 digit answer, with one digit over the 9, another digit over the 8, another digit over the 2 and another digit over the 6.
Since 7134 R 12 is the only 4 digit answer given, 7134 R 12 is the correct answer choice.
