Thus, after five years of accumulation, the aggregate social product is found to have grown from 9,000 to 14,348, the social aggregate capital from (_5,500c + 1,750v = 7,250_) to (_8,784c + 2,782v = 11,566_) and the surplus value from (_1,000s + 500s = 1,500_) to (_1,464s + 1,065s = 2,529_), whereby the surplus value for personal consumption, being 1,500 at the beginning of accumulation, has grown to 732 + 958 = 1,690 in the last year.[102] The capitalist class, then, has capitalised more, it has practised greater abstinence, and yet it has been able to live better. Society, in a material respect, has become richer, richer in means of production, richer in consumer goods, and it has equally become richer in the capitalist sense of the term since it produces more surplus value. The social product circulates _in toto_ in society. Partly it serves to enlarge reproduction and partly it serves consumption. The requirements of capitalist accumulation correspond to the material composition of the aggregate social product. What Marx said in volume i of _Capital_ is true: the increased surplus value can be added on to capital because the social surplus product comes into the world from the very first in the material form of means of production, in a form incapable of utilisation except in the productive process. At the same time reproduction expands in strict conformity with the laws of circulation: the mutual supply of the two departments of production with additional means of production and consumer goods proceeds as an exchange of equivalents. It is an exchange of commodities in the course of which the very accumulation of one department is the condition of accumulation in the other and makes this possible. The complicated problem of accumulation is thus converted into a diagrammatic progression of surprising simplicity. We may continue the above chain of equations _ad infinitum_ so long as we observe this simple principle: that a certain increase in the constant capital of Department I always necessitates a certain increase in its variable capital, which predetermines beforehand the extent of the increase in Department II, with which again a corresponding increase in the variable capital must be co-ordinated. Finally, it depends on the extent of increase in the variable capital in both departments, how much of the total may remain for personal consumption by the capitalist class. The extent of this increase will also show that this amount of consumer goods which remains for private consumption by the capitalist is exactly equivalent to that part of the surplus value which has not been capitalised in either department.