Step 1 :
Divide $ 2943234 $ by $ 2452548 $ and get the remainder

$$ 2943234 : 2452548 = 1 \text{ ( remainder is } \color{blue}{ 490686 } \text{ ) } $$

The remainder is positive ($ 490686 > 0 $), so we will continue with division.

Step 2 :
Divide $ 2452548 $ by $ \color{blue}{ 490686 } $ and get the remainder

$$ 2452548 : 490686 = 4 \text{ ( remainder is } \color{blue}{ 489804 } \text{ ) } $$

The remainder is still positive ($ 489804 > 0 $), so we will continue with division.

Step 3 :
Divide $ 490686 $ by $ \color{blue}{ 489804 } $ and get the remainder

$$ 490686 : 489804 = 1 \text{ ( remainder is } \color{blue}{ 882 } \text{ ) } $$

The remainder is still positive ($ 882 > 0 $), so we will continue with division.

Step 4 :
Divide $ 489804 $ by $ \color{blue}{ 882 } $ and get the remainder

$$ 489804 : 882 = 555 \text{ ( remainder is } \color{blue}{ 294 } \text{ ) } $$

The remainder is still positive ($ 294 > 0 $), so we will continue with division.

Step 5 :
Divide $ 882 $ by $ \color{blue}{ 294 } $ and get the remainder

$$ 882 : \color{blue}{ \boxed { 294 }} = 3 \text{ ( remainder is } \color{blue}{ 0 } \text{ ) } $$

The remainder is zero => GCD is the last divisor $ \color{blue}{ \boxed { 294 }} $.

This solution can be visualized using a Venn diagram.

The GCD equals the product of the numbers at the intersection.

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