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13d Division into ones and zeros (13, 2 words)
I have 6,7. The first word is no problem but I am puzzled by the second. I have only ????i??. Any hint will be very welcome. I thought "systems" or "numbers" but the "I" seems settled

2nd word has defn division
Use the chambers word wizard if you have the first word

Thank you for the introduction to Chambers Wizard. Problem solved. I had rejected the answer having overlooked the question mark.

Could someone explain/parse the answer to 33a escapes contracts having no signature 5 letters F?EES

Fle(x)es, x being the signature.

Thanks, Ginge