Teachers and parrents

Instructions:

Fill in the numbers into the empty boxes in the snake and above the snake so that numbers in snake are the result of the sum or multiplication of the number in the snake from which arrow goes and number above the arrow. The sum of numbers in green fields is predefined.

Example

.
+
 
3
 
+
=
8

Solution

.
1
+
2
 
3
3
5
 
3
+
5
=
8

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