Update README.md

Author: dhatri2003

README.md

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-# Shift-and-Add-Multiplication-RISC-V
-Code on Shift-and-Add Multiplication on RISC-V using Ripes simulator
+# Multiplication with Shift and Add
+
+## Overview:
+This project explores multiplication using the shift-and-add technique, a method comparable to traditional pencil-and-paper multiplication. In this procedure, the multiplier (Y) is added to the multiplicand (X) Y times.
+
+## Methodology:
+The multiplication process involves taking the multiplier's digits one at a time, working from right to left. For each digit, the multiplicand is multiplied by the digit, and the intermediate product is positioned to the left of the previous results.
+
+## Flow Chart:
+A detailed flow chart illustrating the multiplication process is available in the accompanying PDF file.
+
+## Implementation:
+```python
+# Sample code 
+def multiply_with_shift_and_add(X, Y):
+    result = 0
+    while Y > 0:
+        if Y % 2 == 1:
+            result += X
+        X <<= 1  # Left shift by 1 (multiply by 2)
+        Y >>= 1  # Right shift by 1 (divide by 2)
+    return result
+