how to add end of the House_no '/'

Question

i have table coloum like below
House_no
3-4-53 . HYDERABAD
3-4-199/1.ASVV
3-4-vizag
3-4-22,nagar
3-4-45.old colony
3-4-66/99
3-4-

add end of the house no  ''/''
i want output like 
House_no
3-4-53/.hyderabad
3-4-199/1.ASVV
3-4-0/viag
3-4-22/,nagar
3-4-45/.old colony
3-4-66/99
3-4-0/