A contractor has excavated a $4200m$ long trench with an average width of $2\mathrm{.}0m$ and long section as follows:

The following rates of payment are applicable:

Soft material

Soft material excavation, excavation depth $0$ to $1m$ below natural ground level: $R55$ per $m^3$

Soft material excavation, excavation depth $>1m$ to $2m$ below natural ground level: R$65$ per $m^3$

Intermediate material

Intermediate excavation, excavation depth $0$ to $1\mathrm{.}5m$ below natural ground level: $R75$ per $m^3$

Intermediate excavation, excavation depth $>1\mathrm{.}5m$ to $3\mathrm{.}0m$ below natural ground level: R$85$ per $m^3$

Hard material

Hard excavation, excavation depth $0$ to $1\mathrm{.}5m$ below natural ground level: R$110$ per $m^3$

Hard excavation, excavation depth exceeding $1\mathrm{.}5m$ below natural ground level: R$130$ per $m^3$ Calculate the payment due to the contractor for the excavation of the trench.