Hello from Steved

Please I would like to do the below

813, 844, 256, 358, 437, 937 how would one go about adding 1 to end as set
out below please

8131, 8441, 2561, 3581, 4371, 9371 ie replace 813 with 8131 as an example.

ps I've several hundred to do

Thankyou.