Decimal Multiplicative Adder

[Legofreak]

So does the front one in my picture. It's a 2 tick synced torchless hex to binary. technically 4 ticks if you count the input comparator and output repeaters. but the logic is just 2 ticks. It can run at maximum speed indefinitely without burning out.

it has long dust lines and as the power goes along it enables and disables comparators that are OR'd together for each output.