from flask import Flask, jsonify

app = Flask(__name__)

@app.route("/")
def multiply():
    A = [[1,2],[3,4]]
    B = [[5,6],[7,8]]

    R = [[sum(A[i][k]*B[k][j] for k in range(2)) for j in range(2)] for i in range(2)]

    return jsonify({"A": A, "B": B, "Result": R})

if __name__ == "__main__":
    app.run(port=8080)