var increase = 0;

var result = 0;

var counter = 0;

var array = new Array();

function returnMultiplication(){

number1 = document.getElementById('number1_entered').value

number2 = document.getElementById('number2_entered').value

array1 = number1.split("")

array2 = number2.split("")

if(array1.length > 3 || array2.length > 3){

alert("You can not enter numbers with more than 3 digits");

}

else{

for(i=array2.length; i>=0; i--){

result = 0

multiplication_number1 = array1[i];

for(j= array1.length; j>=0; j--){

if(increase == 0){

multiplication_number2 = array1[j]

result = multiplication_number1 + multiplication_number2;

}

else{

multiplication_number2 = array1[j]

result = increase + multiplication_number1 + multiplication_number2;

}

if(result > 9){

increase = result-9

}

else{

increase = 0;

}

}

array.push(result);

counter += 1;

}

}

}