Formular to arrange multiple cell values into one single cell value

Please I have these phone nos in B2:B7:

2348083241987
2348098654217
2348068745216
2348015647821
2342146879654
2343654219365
Please I want a formular that will wrap them into one cell say C1 like this: 2348083241987, 2348098654217, 2348068745216,
2348015647821,
2342146879654, 2343654219365
Thanks for your contribution.

you can use the following formula in C1

=B2&","&" "&B3&","&" "&B4&","&" "&B5&","&" "&B6&","&" "&B7&","&" "&)

Regards
CA Mahaveer Somani