Student was asked to convert the following statement into multiplication format $$7+7+7+7+7+7$$ She wrote the answer as $7\times 6=42$ and was marked wrong as the teacher expected $6\times 7=42$.
Is there any rule that can clarify the answer format?
The same with converting a multiplication sum into adding $6\times 3$
she wrote $3+3+3+3+3+3$ and once again was marked as wrong. Teacher expected $6+6+6=18$