1. The problem is to solve an equation or expression using the vertical method, which typically means aligning numbers vertically for operations like addition, subtraction, multiplication, or division. 2. Since the user did not specify a particular problem, let's demonstrate the vertical method with a simple example: multiplying 23 by 45. 3. Write the numbers vertically aligned by place value: 23 x 45 ----- 4. Multiply 5 (units digit of 45) by 23: 5 x 3 = 15, write 5 and carry 1 5 x 2 = 10, plus 1 carried = 11 So, first partial product is 115. 5. Multiply 4 (tens digit of 45, which is 40) by 23: 4 x 3 = 12, write 2 and carry 1 4 x 2 = 8, plus 1 carried = 9 Since this is tens place, write 920 (shifted one place to the left). 6. Add the partial products: 115 +920 ----- 1035 7. Therefore, $23 \times 45 = 1035$. This vertical method helps organize multiplication step-by-step clearly.