1. The problem is to divide 180 by 4 using long division. 2. The formula for division is: $$\text{Dividend} \div \text{Divisor} = \text{Quotient}$$ 3. Here, Dividend = 180 and Divisor = 4. 4. Start dividing the first digit(s) of 180 by 4: - 4 goes into 18 four times because $$4 \times 4 = 16$$ which is less than 18. 5. Write 4 above the division bar. 6. Subtract 16 from 18: $$18 - 16 = 2$$ 7. Bring down the next digit 0, making the number 20. 8. Divide 20 by 4: - 4 goes into 20 exactly 5 times because $$4 \times 5 = 20$$. 9. Write 5 next to 4 in the quotient. 10. Subtract 20 from 20: $$20 - 20 = 0$$ 11. Since there are no more digits to bring down and the remainder is 0, the division is complete. 12. The quotient is 45. Final answer: $$180 \div 4 = 45$$