Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 649a3220235e79671bd9f5eaacd1a2f13f14745a84f90d7b8507bda7cf3346e2:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^