SCREEN [2]

Number 1 = 981
Number 2 = 327


  100      0      

---

    900     80     1
+  300     20     7
--------------------------------------------------------------------------
 <-{1000}+      <-{100}+    <-{0}+
    300     0     8



Result = 1000 + 300 + 0 + 8;
Result = 1308

SCREEN [3]

Number 1 = 981
Number 2 = 327


  100     00     

---

    900    80    1
+  300    20    7
--------------------------------------------------------------------------
 <-{1000}+       <-{100}+       <-{00}+
   300    00    8



Result = 1308

SCREEN [4]

Number 1 = 981
Number 2 = 327


     1   0   

---

    9   8   1
+  3   2   7
--------------------------------------------------------------------------
   1 3   0   8



Result = 1308