I think expansion can be very fast without a lot of debt involved. Since the processors are so cheap its cost will be balanced by the profits it has generated in 3-4 months. Let's say there are 5 processors at a given time. In a few months the profits they generate can finance 5 more processors. Then the number financed in the same way will increase from 10 t0 20, from 20 to 40, from 40 to 80 and from 80 til 160. All this may not take that long.
The other alternative is that the processors may be financed by the partners in joint ventures in return for a part in the joint venture. With so fast payback it makes good financial sense for a pertner to finance the processor in return for for instance 20 % of the JV.
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