You have to calculate the output in a way that repeated sum of digits until it is before single digit. Multiply those digits which are producing single digit means a final state.
Lets take 19 as example ,19 breaks into 1+9=10 then 10 breaks into 1+0=1. 1 is a single digit sum.
But we have to multiply the at last step before ( the producer of 1 is 10 so take digits of 10) so 1*0=0
So , output Becomes 0
Lets take another example as 129, so 129 breaks into 1+2+9 =12 breaks into 1+2=3. 3 is single digit sum.
So we take 12 and multiply its digits 1*2=2
So , output Becomes 2
First Line contains no of test cases by t, and then t inputs.
Output Format- Every case result should be in new line.